Home / 87,712.46-121,043.12-47,426.20

Finding the Fourth Proportional to 87,712.46, 121,043.12 and 47,426.20

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Solution

The fourth proportional to 87,712.46, 121,043.12 and 47,426.20 is: 65,448.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.46 : 121,043.12 = 47,426.20 : x
  2. Step 2: Convert to fraction form
    87,712.46/121,043.12 = 47,426.20/x
  3. Step 3: Cross multiply
    87,712.46x = 121,043.12 × 47,426.20
  4. Step 4: Simplify right side
    87,712.46x = 5,740,615,217.74
  5. Step 5: Solve for x
    x = 5,740,615,217.74/87,712.46
  6. Step 6: Final answer
    x = 65,448.12

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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.