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Finding the Fourth Proportional to 82,798,454.60, 124,197,681.90 and 82,231,584.20

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Solution

The fourth proportional to 82,798,454.60, 124,197,681.90 and 82,231,584.20 is: 123,347,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,798,454.60 : 124,197,681.90 = 82,231,584.20 : x
  2. Step 2: Convert to fraction form
    82,798,454.60/124,197,681.90 = 82,231,584.20/x
  3. Step 3: Cross multiply
    82,798,454.60x = 124,197,681.90 × 82,231,584.20
  4. Step 4: Simplify right side
    82,798,454.60x = 10,212,972,136,604,666
  5. Step 5: Solve for x
    x = 10,212,972,136,604,666/82,798,454.60
  6. Step 6: Final answer
    x = 123,347,376.30

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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.