Home / 87,478.56-131,284.80-45,393.12

Finding the Fourth Proportional to 87,478.56, 131,284.80 and 45,393.12

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Solution

The fourth proportional to 87,478.56, 131,284.80 and 45,393.12 is: 68,124.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.56 : 131,284.80 = 45,393.12 : x
  2. Step 2: Convert to fraction form
    87,478.56/131,284.80 = 45,393.12/x
  3. Step 3: Cross multiply
    87,478.56x = 131,284.80 × 45,393.12
  4. Step 4: Simplify right side
    87,478.56x = 5,959,426,680.58
  5. Step 5: Solve for x
    x = 5,959,426,680.58/87,478.56
  6. Step 6: Final answer
    x = 68,124.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.