Home / 87,924.90-121,336.20-47,639.70

Finding the Fourth Proportional to 87,924.90, 121,336.20 and 47,639.70

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Solution

The fourth proportional to 87,924.90, 121,336.20 and 47,639.70 is: 65,742.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,924.90 : 121,336.20 = 47,639.70 : x
  2. Step 2: Convert to fraction form
    87,924.90/121,336.20 = 47,639.70/x
  3. Step 3: Cross multiply
    87,924.90x = 121,336.20 × 47,639.70
  4. Step 4: Simplify right side
    87,924.90x = 5,780,420,167.14
  5. Step 5: Solve for x
    x = 5,780,420,167.14/87,924.90
  6. Step 6: Final answer
    x = 65,742.70

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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.