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Finding the Fourth Proportional to 81,352.72, 112,265.58 and 45,542.56

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Solution

The fourth proportional to 81,352.72, 112,265.58 and 45,542.56 is: 62,848.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,352.72 : 112,265.58 = 45,542.56 : x
  2. Step 2: Convert to fraction form
    81,352.72/112,265.58 = 45,542.56/x
  3. Step 3: Cross multiply
    81,352.72x = 112,265.58 × 45,542.56
  4. Step 4: Simplify right side
    81,352.72x = 5,112,861,913.08
  5. Step 5: Solve for x
    x = 5,112,861,913.08/81,352.72
  6. Step 6: Final answer
    x = 62,848.08

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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.