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Finding the Fourth Proportional to 72,526.50, 108,789.75 and 25,781.22

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Solution

The fourth proportional to 72,526.50, 108,789.75 and 25,781.22 is: 38,671.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,526.50 : 108,789.75 = 25,781.22 : x
  2. Step 2: Convert to fraction form
    72,526.50/108,789.75 = 25,781.22/x
  3. Step 3: Cross multiply
    72,526.50x = 108,789.75 × 25,781.22
  4. Step 4: Simplify right side
    72,526.50x = 2,804,732,478.50
  5. Step 5: Solve for x
    x = 2,804,732,478.50/72,526.50
  6. Step 6: Final answer
    x = 38,671.83

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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.