Home / 87,882.23-121,279.69-53,909.45

Finding the Fourth Proportional to 87,882.23, 121,279.69 and 53,909.45

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Solution

The fourth proportional to 87,882.23, 121,279.69 and 53,909.45 is: 74,396.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,882.23 : 121,279.69 = 53,909.45 : x
  2. Step 2: Convert to fraction form
    87,882.23/121,279.69 = 53,909.45/x
  3. Step 3: Cross multiply
    87,882.23x = 121,279.69 × 53,909.45
  4. Step 4: Simplify right side
    87,882.23x = 6,538,120,777.67
  5. Step 5: Solve for x
    x = 6,538,120,777.67/87,882.23
  6. Step 6: Final answer
    x = 74,396.40

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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.