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Finding the Fourth Proportional to 82,758,124.80, 123,924,610.80 and 65,610,295.20

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Solution

The fourth proportional to 82,758,124.80, 123,924,610.80 and 65,610,295.20 is: 98,246,913.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,758,124.80 : 123,924,610.80 = 65,610,295.20 : x
  2. Step 2: Convert to fraction form
    82,758,124.80/123,924,610.80 = 65,610,295.20/x
  3. Step 3: Cross multiply
    82,758,124.80x = 123,924,610.80 × 65,610,295.20
  4. Step 4: Simplify right side
    82,758,124.80x = 8,130,730,297,133,108
  5. Step 5: Solve for x
    x = 8,130,730,297,133,108/82,758,124.80
  6. Step 6: Final answer
    x = 98,246,913.12

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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.