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Finding the Fourth Proportional to 81,881.28, 112,961.28 and 46,937.52

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Solution

The fourth proportional to 81,881.28, 112,961.28 and 46,937.52 is: 64,753.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,881.28 : 112,961.28 = 46,937.52 : x
  2. Step 2: Convert to fraction form
    81,881.28/112,961.28 = 46,937.52/x
  3. Step 3: Cross multiply
    81,881.28x = 112,961.28 × 46,937.52
  4. Step 4: Simplify right side
    81,881.28x = 5,302,122,339.23
  5. Step 5: Solve for x
    x = 5,302,122,339.23/81,881.28
  6. Step 6: Final answer
    x = 64,753.78

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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.