Home / 42,752.52-64,129.89-20,257.92

Finding the Fourth Proportional to 42,752.52, 64,129.89 and 20,257.92

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Solution

The fourth proportional to 42,752.52, 64,129.89 and 20,257.92 is: 30,387.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,752.52 : 64,129.89 = 20,257.92 : x
  2. Step 2: Convert to fraction form
    42,752.52/64,129.89 = 20,257.92/x
  3. Step 3: Cross multiply
    42,752.52x = 64,129.89 × 20,257.92
  4. Step 4: Simplify right side
    42,752.52x = 1,299,138,181.23
  5. Step 5: Solve for x
    x = 1,299,138,181.23/42,752.52
  6. Step 6: Final answer
    x = 30,387.41

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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.