Home / 83,664.64-124,895.11-71,689.48

Finding the Fourth Proportional to 83,664.64, 124,895.11 and 71,689.48

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Solution

The fourth proportional to 83,664.64, 124,895.11 and 71,689.48 is: 107,018.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,664.64 : 124,895.11 = 71,689.48 : x
  2. Step 2: Convert to fraction form
    83,664.64/124,895.11 = 71,689.48/x
  3. Step 3: Cross multiply
    83,664.64x = 124,895.11 × 71,689.48
  4. Step 4: Simplify right side
    83,664.64x = 8,953,665,490.44
  5. Step 5: Solve for x
    x = 8,953,665,490.44/83,664.64
  6. Step 6: Final answer
    x = 107,018.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.