Home / 87,686.42-121,019.02-49,453.80

Finding the Fourth Proportional to 87,686.42, 121,019.02 and 49,453.80

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Solution

The fourth proportional to 87,686.42, 121,019.02 and 49,453.80 is: 68,252.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.42 : 121,019.02 = 49,453.80 : x
  2. Step 2: Convert to fraction form
    87,686.42/121,019.02 = 49,453.80/x
  3. Step 3: Cross multiply
    87,686.42x = 121,019.02 × 49,453.80
  4. Step 4: Simplify right side
    87,686.42x = 5,984,850,411.28
  5. Step 5: Solve for x
    x = 5,984,850,411.28/87,686.42
  6. Step 6: Final answer
    x = 68,252.88

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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.