Home / 87,302.67-130,957.25-28,139.19

Finding the Fourth Proportional to 87,302.67, 130,957.25 and 28,139.19

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Solution

The fourth proportional to 87,302.67, 130,957.25 and 28,139.19 is: 42,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,302.67 : 130,957.25 = 28,139.19 : x
  2. Step 2: Convert to fraction form
    87,302.67/130,957.25 = 28,139.19/x
  3. Step 3: Cross multiply
    87,302.67x = 130,957.25 × 28,139.19
  4. Step 4: Simplify right side
    87,302.67x = 3,685,030,798.93
  5. Step 5: Solve for x
    x = 3,685,030,798.93/87,302.67
  6. Step 6: Final answer
    x = 42,209.83

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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.