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Finding the Fourth Proportional to 81,229.60, 112,096.08 and 45,419.20

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Solution

The fourth proportional to 81,229.60, 112,096.08 and 45,419.20 is: 62,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,229.60 : 112,096.08 = 45,419.20 : x
  2. Step 2: Convert to fraction form
    81,229.60/112,096.08 = 45,419.20/x
  3. Step 3: Cross multiply
    81,229.60x = 112,096.08 × 45,419.20
  4. Step 4: Simplify right side
    81,229.60x = 5,091,314,276.74
  5. Step 5: Solve for x
    x = 5,091,314,276.74/81,229.60
  6. Step 6: Final answer
    x = 62,678.07

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1.5x scale

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.