Home / 81,252.20-112,122.27-74,559.98

Finding the Fourth Proportional to 81,252.20, 112,122.27 and 74,559.98

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Solution

The fourth proportional to 81,252.20, 112,122.27 and 74,559.98 is: 102,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,252.20 : 112,122.27 = 74,559.98 : x
  2. Step 2: Convert to fraction form
    81,252.20/112,122.27 = 74,559.98/x
  3. Step 3: Cross multiply
    81,252.20x = 112,122.27 × 74,559.98
  4. Step 4: Simplify right side
    81,252.20x = 8,359,833,648.14
  5. Step 5: Solve for x
    x = 8,359,833,648.14/81,252.20
  6. Step 6: Final answer
    x = 102,887.48

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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.