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Finding the Fourth Proportional to 81,332.86, 112,239.32 and 45,522.87

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Solution

The fourth proportional to 81,332.86, 112,239.32 and 45,522.87 is: 62,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,332.86 : 112,239.32 = 45,522.87 : x
  2. Step 2: Convert to fraction form
    81,332.86/112,239.32 = 45,522.87/x
  3. Step 3: Cross multiply
    81,332.86x = 112,239.32 × 45,522.87
  4. Step 4: Simplify right side
    81,332.86x = 5,109,455,973.25
  5. Step 5: Solve for x
    x = 5,109,455,973.25/81,332.86
  6. Step 6: Final answer
    x = 62,821.55

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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.