Home / 87,117.47-120,221.58-48,354.90

Finding the Fourth Proportional to 87,117.47, 120,221.58 and 48,354.90

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Solution

The fourth proportional to 87,117.47, 120,221.58 and 48,354.90 is: 66,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,117.47 : 120,221.58 = 48,354.90 : x
  2. Step 2: Convert to fraction form
    87,117.47/120,221.58 = 48,354.90/x
  3. Step 3: Cross multiply
    87,117.47x = 120,221.58 × 48,354.90
  4. Step 4: Simplify right side
    87,117.47x = 5,813,302,478.74
  5. Step 5: Solve for x
    x = 5,813,302,478.74/87,117.47
  6. Step 6: Final answer
    x = 66,729.47

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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.