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Finding the Fourth Proportional to 81,367.52, 112,281.52 and 54,505.68

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Solution

The fourth proportional to 81,367.52, 112,281.52 and 54,505.68 is: 75,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,367.52 : 112,281.52 = 54,505.68 : x
  2. Step 2: Convert to fraction form
    81,367.52/112,281.52 = 54,505.68/x
  3. Step 3: Cross multiply
    81,367.52x = 112,281.52 × 54,505.68
  4. Step 4: Simplify right side
    81,367.52x = 6,119,980,599.03
  5. Step 5: Solve for x
    x = 6,119,980,599.03/81,367.52
  6. Step 6: Final answer
    x = 75,214.05

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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.