Home / 85,826,668.80-128,740,003.20-76,473,307.20

Finding the Fourth Proportional to 85,826,668.80, 128,740,003.20 and 76,473,307.20

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Solution

The fourth proportional to 85,826,668.80, 128,740,003.20 and 76,473,307.20 is: 114,709,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,826,668.80 : 128,740,003.20 = 76,473,307.20 : x
  2. Step 2: Convert to fraction form
    85,826,668.80/128,740,003.20 = 76,473,307.20/x
  3. Step 3: Cross multiply
    85,826,668.80x = 128,740,003.20 × 76,473,307.20
  4. Step 4: Simplify right side
    85,826,668.80x = 9,845,173,813,642,584
  5. Step 5: Solve for x
    x = 9,845,173,813,642,584/85,826,668.80
  6. Step 6: Final answer
    x = 114,709,960.80

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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.