Home / 87,219.20-130,569.60-52,140.80

Finding the Fourth Proportional to 87,219.20, 130,569.60 and 52,140.80

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Solution

The fourth proportional to 87,219.20, 130,569.60 and 52,140.80 is: 78,056.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,219.20 : 130,569.60 = 52,140.80 : x
  2. Step 2: Convert to fraction form
    87,219.20/130,569.60 = 52,140.80/x
  3. Step 3: Cross multiply
    87,219.20x = 130,569.60 × 52,140.80
  4. Step 4: Simplify right side
    87,219.20x = 6,808,003,399.68
  5. Step 5: Solve for x
    x = 6,808,003,399.68/87,219.20
  6. Step 6: Final answer
    x = 78,056.25

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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.