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Finding the Fourth Proportional to 83,301.73, 124,952.64 and 20,972.23

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Solution

The fourth proportional to 83,301.73, 124,952.64 and 20,972.23 is: 31,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,301.73 : 124,952.64 = 20,972.23 : x
  2. Step 2: Convert to fraction form
    83,301.73/124,952.64 = 20,972.23/x
  3. Step 3: Cross multiply
    83,301.73x = 124,952.64 × 20,972.23
  4. Step 4: Simplify right side
    83,301.73x = 2,620,535,505.19
  5. Step 5: Solve for x
    x = 2,620,535,505.19/83,301.73
  6. Step 6: Final answer
    x = 31,458.36

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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.