Home / 90,439.80-124,663.08-71,288.52

Finding the Fourth Proportional to 90,439.80, 124,663.08 and 71,288.52

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Solution

The fourth proportional to 90,439.80, 124,663.08 and 71,288.52 is: 98,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,439.80 : 124,663.08 = 71,288.52 : x
  2. Step 2: Convert to fraction form
    90,439.80/124,663.08 = 71,288.52/x
  3. Step 3: Cross multiply
    90,439.80x = 124,663.08 × 71,288.52
  4. Step 4: Simplify right side
    90,439.80x = 8,887,046,471.84
  5. Step 5: Solve for x
    x = 8,887,046,471.84/90,439.80
  6. Step 6: Final answer
    x = 98,264.77

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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.