Home / 87,261.63-130,892.44-28,103.28

Finding the Fourth Proportional to 87,261.63, 130,892.44 and 28,103.28

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Solution

The fourth proportional to 87,261.63, 130,892.44 and 28,103.28 is: 42,154.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,261.63 : 130,892.44 = 28,103.28 : x
  2. Step 2: Convert to fraction form
    87,261.63/130,892.44 = 28,103.28/x
  3. Step 3: Cross multiply
    87,261.63x = 130,892.44 × 28,103.28
  4. Step 4: Simplify right side
    87,261.63x = 3,678,506,891.20
  5. Step 5: Solve for x
    x = 3,678,506,891.20/87,261.63
  6. Step 6: Final answer
    x = 42,154.92

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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.