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Finding the Fourth Proportional to 71,892.36, 107,859.96 and 51,946.92

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Solution

The fourth proportional to 71,892.36, 107,859.96 and 51,946.92 is: 77,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,892.36 : 107,859.96 = 51,946.92 : x
  2. Step 2: Convert to fraction form
    71,892.36/107,859.96 = 51,946.92/x
  3. Step 3: Cross multiply
    71,892.36x = 107,859.96 × 51,946.92
  4. Step 4: Simplify right side
    71,892.36x = 5,602,992,713.32
  5. Step 5: Solve for x
    x = 5,602,992,713.32/71,892.36
  6. Step 6: Final answer
    x = 77,935.86

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1.5x scale

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.