Home / 81,490.11-112,456.22-45,680.15

Finding the Fourth Proportional to 81,490.11, 112,456.22 and 45,680.15

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Solution

The fourth proportional to 81,490.11, 112,456.22 and 45,680.15 is: 63,038.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,490.11 : 112,456.22 = 45,680.15 : x
  2. Step 2: Convert to fraction form
    81,490.11/112,456.22 = 45,680.15/x
  3. Step 3: Cross multiply
    81,490.11x = 112,456.22 × 45,680.15
  4. Step 4: Simplify right side
    81,490.11x = 5,137,016,207.35
  5. Step 5: Solve for x
    x = 5,137,016,207.35/81,490.11
  6. Step 6: Final answer
    x = 63,038.52

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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.