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Finding the Fourth Proportional to 67,288.60, 101,151.60 and 57,665.80

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Solution

The fourth proportional to 67,288.60, 101,151.60 and 57,665.80 is: 86,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,288.60 : 101,151.60 = 57,665.80 : x
  2. Step 2: Convert to fraction form
    67,288.60/101,151.60 = 57,665.80/x
  3. Step 3: Cross multiply
    67,288.60x = 101,151.60 × 57,665.80
  4. Step 4: Simplify right side
    67,288.60x = 5,832,987,935.28
  5. Step 5: Solve for x
    x = 5,832,987,935.28/67,288.60
  6. Step 6: Final answer
    x = 86,686.12

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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.