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Finding the Fourth Proportional to 91,671.80, 126,508.38 and 55,863.32

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Solution

The fourth proportional to 91,671.80, 126,508.38 and 55,863.32 is: 77,092.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.80 : 126,508.38 = 55,863.32 : x
  2. Step 2: Convert to fraction form
    91,671.80/126,508.38 = 55,863.32/x
  3. Step 3: Cross multiply
    91,671.80x = 126,508.38 × 55,863.32
  4. Step 4: Simplify right side
    91,671.80x = 7,067,178,114.62
  5. Step 5: Solve for x
    x = 7,067,178,114.62/91,671.80
  6. Step 6: Final answer
    x = 77,092.17

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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.