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Finding the Fourth Proportional to 81,393.83, 112,318.13 and 45,575.63

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Solution

The fourth proportional to 81,393.83, 112,318.13 and 45,575.63 is: 62,891.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393.83 : 112,318.13 = 45,575.63 : x
  2. Step 2: Convert to fraction form
    81,393.83/112,318.13 = 45,575.63/x
  3. Step 3: Cross multiply
    81,393.83x = 112,318.13 × 45,575.63
  4. Step 4: Simplify right side
    81,393.83x = 5,118,969,535.17
  5. Step 5: Solve for x
    x = 5,118,969,535.17/81,393.83
  6. Step 6: Final answer
    x = 62,891.37

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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.