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Finding the Fourth Proportional to 81,134.60, 111,964.56 and 45,325.12

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Solution

The fourth proportional to 81,134.60, 111,964.56 and 45,325.12 is: 62,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,134.60 : 111,964.56 = 45,325.12 : x
  2. Step 2: Convert to fraction form
    81,134.60/111,964.56 = 45,325.12/x
  3. Step 3: Cross multiply
    81,134.60x = 111,964.56 × 45,325.12
  4. Step 4: Simplify right side
    81,134.60x = 5,074,807,117.75
  5. Step 5: Solve for x
    x = 5,074,807,117.75/81,134.60
  6. Step 6: Final answer
    x = 62,548.00

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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.