Home / 81,445.52-112,393.38-45,635.42

Finding the Fourth Proportional to 81,445.52, 112,393.38 and 45,635.42

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Solution

The fourth proportional to 81,445.52, 112,393.38 and 45,635.42 is: 62,976.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445.52 : 112,393.38 = 45,635.42 : x
  2. Step 2: Convert to fraction form
    81,445.52/112,393.38 = 45,635.42/x
  3. Step 3: Cross multiply
    81,445.52x = 112,393.38 × 45,635.42
  4. Step 4: Simplify right side
    81,445.52x = 5,129,119,101.52
  5. Step 5: Solve for x
    x = 5,129,119,101.52/81,445.52
  6. Step 6: Final answer
    x = 62,976.07

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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.