Home / 87,352.40-130,942.20-42,942.80

Finding the Fourth Proportional to 87,352.40, 130,942.20 and 42,942.80

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Solution

The fourth proportional to 87,352.40, 130,942.20 and 42,942.80 is: 64,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,352.40 : 130,942.20 = 42,942.80 : x
  2. Step 2: Convert to fraction form
    87,352.40/130,942.20 = 42,942.80/x
  3. Step 3: Cross multiply
    87,352.40x = 130,942.20 × 42,942.80
  4. Step 4: Simplify right side
    87,352.40x = 5,623,024,706.16
  5. Step 5: Solve for x
    x = 5,623,024,706.16/87,352.40
  6. Step 6: Final answer
    x = 64,371.73

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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.