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Finding the Fourth Proportional to 87,864.98, 121,253.49 and 47,578.86

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Solution

The fourth proportional to 87,864.98, 121,253.49 and 47,578.86 is: 65,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,864.98 : 121,253.49 = 47,578.86 : x
  2. Step 2: Convert to fraction form
    87,864.98/121,253.49 = 47,578.86/x
  3. Step 3: Cross multiply
    87,864.98x = 121,253.49 × 47,578.86
  4. Step 4: Simplify right side
    87,864.98x = 5,769,102,825.22
  5. Step 5: Solve for x
    x = 5,769,102,825.22/87,864.98
  6. Step 6: Final answer
    x = 65,658.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.