Home / 83,418.08-125,127.92-21,088.56

Finding the Fourth Proportional to 83,418.08, 125,127.92 and 21,088.56

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Solution

The fourth proportional to 83,418.08, 125,127.92 and 21,088.56 is: 31,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,418.08 : 125,127.92 = 21,088.56 : x
  2. Step 2: Convert to fraction form
    83,418.08/125,127.92 = 21,088.56/x
  3. Step 3: Cross multiply
    83,418.08x = 125,127.92 × 21,088.56
  4. Step 4: Simplify right side
    83,418.08x = 2,638,767,648.60
  5. Step 5: Solve for x
    x = 2,638,767,648.60/83,418.08
  6. Step 6: Final answer
    x = 31,633.04

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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.