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Finding the Fourth Proportional to 72,356.39, 108,545.51 and 25,605.62

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Solution

The fourth proportional to 72,356.39, 108,545.51 and 25,605.62 is: 38,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,356.39 : 108,545.51 = 25,605.62 : x
  2. Step 2: Convert to fraction form
    72,356.39/108,545.51 = 25,605.62/x
  3. Step 3: Cross multiply
    72,356.39x = 108,545.51 × 25,605.62
  4. Step 4: Simplify right side
    72,356.39x = 2,779,375,081.77
  5. Step 5: Solve for x
    x = 2,779,375,081.77/72,356.39
  6. Step 6: Final answer
    x = 38,412.30

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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.