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Finding the Fourth Proportional to 81,411.12, 112,346.69 and 45,601.47

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Solution

The fourth proportional to 81,411.12, 112,346.69 and 45,601.47 is: 62,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,411.12 : 112,346.69 = 45,601.47 : x
  2. Step 2: Convert to fraction form
    81,411.12/112,346.69 = 45,601.47/x
  3. Step 3: Cross multiply
    81,411.12x = 112,346.69 × 45,601.47
  4. Step 4: Simplify right side
    81,411.12x = 5,123,173,985.63
  5. Step 5: Solve for x
    x = 5,123,173,985.63/81,411.12
  6. Step 6: Final answer
    x = 62,929.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.