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Finding the Fourth Proportional to 81,065.52, 111,889.08 and 47,542.32

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Solution

The fourth proportional to 81,065.52, 111,889.08 and 47,542.32 is: 65,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,065.52 : 111,889.08 = 47,542.32 : x
  2. Step 2: Convert to fraction form
    81,065.52/111,889.08 = 47,542.32/x
  3. Step 3: Cross multiply
    81,065.52x = 111,889.08 × 47,542.32
  4. Step 4: Simplify right side
    81,065.52x = 5,319,466,445.87
  5. Step 5: Solve for x
    x = 5,319,466,445.87/81,065.52
  6. Step 6: Final answer
    x = 65,619.35

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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.