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Finding the Fourth Proportional to 126,552.60, 189,901.80 and 47,723.40

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Solution

The fourth proportional to 126,552.60, 189,901.80 and 47,723.40 is: 71,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,552.60 : 189,901.80 = 47,723.40 : x
  2. Step 2: Convert to fraction form
    126,552.60/189,901.80 = 47,723.40/x
  3. Step 3: Cross multiply
    126,552.60x = 189,901.80 × 47,723.40
  4. Step 4: Simplify right side
    126,552.60x = 9,062,759,562.12
  5. Step 5: Solve for x
    x = 9,062,759,562.12/126,552.60
  6. Step 6: Final answer
    x = 71,612.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.