Home / 87,729.91-121,068.22-47,444.45

Finding the Fourth Proportional to 87,729.91, 121,068.22 and 47,444.45

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Solution

The fourth proportional to 87,729.91, 121,068.22 and 47,444.45 is: 65,473.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,729.91 : 121,068.22 = 47,444.45 : x
  2. Step 2: Convert to fraction form
    87,729.91/121,068.22 = 47,444.45/x
  3. Step 3: Cross multiply
    87,729.91x = 121,068.22 × 47,444.45
  4. Step 4: Simplify right side
    87,729.91x = 5,744,015,228.99
  5. Step 5: Solve for x
    x = 5,744,015,228.99/87,729.91
  6. Step 6: Final answer
    x = 65,473.86

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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.