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Finding the Fourth Proportional to 72,438.35, 108,630.90 and 25,041.29

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Solution

The fourth proportional to 72,438.35, 108,630.90 and 25,041.29 is: 37,552.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,438.35 : 108,630.90 = 25,041.29 : x
  2. Step 2: Convert to fraction form
    72,438.35/108,630.90 = 25,041.29/x
  3. Step 3: Cross multiply
    72,438.35x = 108,630.90 × 25,041.29
  4. Step 4: Simplify right side
    72,438.35x = 2,720,257,326.71
  5. Step 5: Solve for x
    x = 2,720,257,326.71/72,438.35
  6. Step 6: Final answer
    x = 37,552.73

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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.