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Finding the Fourth Proportional to 72,448.56, 108,690.84 and 25,706.16

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Solution

The fourth proportional to 72,448.56, 108,690.84 and 25,706.16 is: 38,565.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,448.56 : 108,690.84 = 25,706.16 : x
  2. Step 2: Convert to fraction form
    72,448.56/108,690.84 = 25,706.16/x
  3. Step 3: Cross multiply
    72,448.56x = 108,690.84 × 25,706.16
  4. Step 4: Simplify right side
    72,448.56x = 2,794,024,123.57
  5. Step 5: Solve for x
    x = 2,794,024,123.57/72,448.56
  6. Step 6: Final answer
    x = 38,565.63

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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.