Home / 87,335.32-120,634.14-64,715.80

Finding the Fourth Proportional to 87,335.32, 120,634.14 and 64,715.80

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Solution

The fourth proportional to 87,335.32, 120,634.14 and 64,715.80 is: 89,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,335.32 : 120,634.14 = 64,715.80 : x
  2. Step 2: Convert to fraction form
    87,335.32/120,634.14 = 64,715.80/x
  3. Step 3: Cross multiply
    87,335.32x = 120,634.14 × 64,715.80
  4. Step 4: Simplify right side
    87,335.32x = 7,806,934,877.41
  5. Step 5: Solve for x
    x = 7,806,934,877.41/87,335.32
  6. Step 6: Final answer
    x = 89,390.35

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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.