Home / 81,521.29-112,508.75-54,295.87

Finding the Fourth Proportional to 81,521.29, 112,508.75 and 54,295.87

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Solution

The fourth proportional to 81,521.29, 112,508.75 and 54,295.87 is: 74,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.29 : 112,508.75 = 54,295.87 : x
  2. Step 2: Convert to fraction form
    81,521.29/112,508.75 = 54,295.87/x
  3. Step 3: Cross multiply
    81,521.29x = 112,508.75 × 54,295.87
  4. Step 4: Simplify right side
    81,521.29x = 6,108,760,463.86
  5. Step 5: Solve for x
    x = 6,108,760,463.86/81,521.29
  6. Step 6: Final answer
    x = 74,934.54

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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.