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Finding the Fourth Proportional to 85,812,048,552.90, 128,718,072,829.35 and 85,812,048,552.90

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Solution

The fourth proportional to 85,812,048,552.90, 128,718,072,829.35 and 85,812,048,552.90 is: 128,718,072,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812,048,552.90 : 128,718,072,829.35 = 85,812,048,552.90 : x
  2. Step 2: Convert to fraction form
    85,812,048,552.90/128,718,072,829.35 = 85,812,048,552.90/x
  3. Step 3: Cross multiply
    85,812,048,552.90x = 128,718,072,829.35 × 85,812,048,552.90
  4. Step 4: Simplify right side
    85,812,048,552.90x = 11,045,561,515,267,900,571,648
  5. Step 5: Solve for x
    x = 11,045,561,515,267,900,571,648/85,812,048,552.90
  6. Step 6: Final answer
    x = 128,718,072,829.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.