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Finding the Fourth Proportional to 87,882.88, 121,279.44 and 49,644.40

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Solution

The fourth proportional to 87,882.88, 121,279.44 and 49,644.40 is: 68,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,882.88 : 121,279.44 = 49,644.40 : x
  2. Step 2: Convert to fraction form
    87,882.88/121,279.44 = 49,644.40/x
  3. Step 3: Cross multiply
    87,882.88x = 121,279.44 × 49,644.40
  4. Step 4: Simplify right side
    87,882.88x = 6,020,845,031.14
  5. Step 5: Solve for x
    x = 6,020,845,031.14/87,882.88
  6. Step 6: Final answer
    x = 68,509.87

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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.