Home / 87,359.54-120,631.77-82,875.47

Finding the Fourth Proportional to 87,359.54, 120,631.77 and 82,875.47

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Solution

The fourth proportional to 87,359.54, 120,631.77 and 82,875.47 is: 114,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,359.54 : 120,631.77 = 82,875.47 : x
  2. Step 2: Convert to fraction form
    87,359.54/120,631.77 = 82,875.47/x
  3. Step 3: Cross multiply
    87,359.54x = 120,631.77 × 82,875.47
  4. Step 4: Simplify right side
    87,359.54x = 9,997,414,032.52
  5. Step 5: Solve for x
    x = 9,997,414,032.52/87,359.54
  6. Step 6: Final answer
    x = 114,439.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.