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Finding the Fourth Proportional to 81,460.66, 112,360.50 and 66,353.96

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Solution

The fourth proportional to 81,460.66, 112,360.50 and 66,353.96 is: 91,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,460.66 : 112,360.50 = 66,353.96 : x
  2. Step 2: Convert to fraction form
    81,460.66/112,360.50 = 66,353.96/x
  3. Step 3: Cross multiply
    81,460.66x = 112,360.50 × 66,353.96
  4. Step 4: Simplify right side
    81,460.66x = 7,455,564,122.58
  5. Step 5: Solve for x
    x = 7,455,564,122.58/81,460.66
  6. Step 6: Final answer
    x = 91,523.49

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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.