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Finding the Fourth Proportional to 81,332.80, 112,241.63 and 45,521.89

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Solution

The fourth proportional to 81,332.80, 112,241.63 and 45,521.89 is: 62,821.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.80 : 112,241.63 = 45,521.89 : x
  2. Step 2: Convert to fraction form
    81,332.80/112,241.63 = 45,521.89/x
  3. Step 3: Cross multiply
    81,332.80x = 112,241.63 × 45,521.89
  4. Step 4: Simplify right side
    81,332.80x = 5,109,450,686.88
  5. Step 5: Solve for x
    x = 5,109,450,686.88/81,332.80
  6. Step 6: Final answer
    x = 62,821.53

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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.