Home / 85,829,545.80-128,744,318.70-76,476,184.20

Finding the Fourth Proportional to 85,829,545.80, 128,744,318.70 and 76,476,184.20

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Solution

The fourth proportional to 85,829,545.80, 128,744,318.70 and 76,476,184.20 is: 114,714,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,829,545.80 : 128,744,318.70 = 76,476,184.20 : x
  2. Step 2: Convert to fraction form
    85,829,545.80/128,744,318.70 = 76,476,184.20/x
  3. Step 3: Cross multiply
    85,829,545.80x = 128,744,318.70 × 76,476,184.20
  4. Step 4: Simplify right side
    85,829,545.80x = 9,845,874,231,604,706
  5. Step 5: Solve for x
    x = 9,845,874,231,604,706/85,829,545.80
  6. Step 6: Final answer
    x = 114,714,276.30

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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.