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Finding the Fourth Proportional to 68,661,320.76, 94,752,225.90 and 37,720,824.12

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Solution

The fourth proportional to 68,661,320.76, 94,752,225.90 and 37,720,824.12 is: 52,054,519.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,661,320.76 : 94,752,225.90 = 37,720,824.12 : x
  2. Step 2: Convert to fraction form
    68,661,320.76/94,752,225.90 = 37,720,824.12/x
  3. Step 3: Cross multiply
    68,661,320.76x = 94,752,225.90 × 37,720,824.12
  4. Step 4: Simplify right side
    68,661,320.76x = 3,574,132,048,152,408.50
  5. Step 5: Solve for x
    x = 3,574,132,048,152,408.50/68,661,320.76
  6. Step 6: Final answer
    x = 52,054,519.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.