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Finding the Fourth Proportional to 72,403.62, 108,537.36 and 39,073.74

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Solution

The fourth proportional to 72,403.62, 108,537.36 and 39,073.74 is: 58,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403.62 : 108,537.36 = 39,073.74 : x
  2. Step 2: Convert to fraction form
    72,403.62/108,537.36 = 39,073.74/x
  3. Step 3: Cross multiply
    72,403.62x = 108,537.36 × 39,073.74
  4. Step 4: Simplify right side
    72,403.62x = 4,240,960,584.93
  5. Step 5: Solve for x
    x = 4,240,960,584.93/72,403.62
  6. Step 6: Final answer
    x = 58,573.87

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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.