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Finding the Fourth Proportional to 72,565.50, 108,848.25 and 25,818.51

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Solution

The fourth proportional to 72,565.50, 108,848.25 and 25,818.51 is: 38,727.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,565.50 : 108,848.25 = 25,818.51 : x
  2. Step 2: Convert to fraction form
    72,565.50/108,848.25 = 25,818.51/x
  3. Step 3: Cross multiply
    72,565.50x = 108,848.25 × 25,818.51
  4. Step 4: Simplify right side
    72,565.50x = 2,810,299,631.11
  5. Step 5: Solve for x
    x = 2,810,299,631.11/72,565.50
  6. Step 6: Final answer
    x = 38,727.77

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Double scale
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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.