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Finding the Fourth Proportional to 81,368.52, 112,282.90 and 54,506.68

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Solution

The fourth proportional to 81,368.52, 112,282.90 and 54,506.68 is: 75,215.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.52 : 112,282.90 = 54,506.68 : x
  2. Step 2: Convert to fraction form
    81,368.52/112,282.90 = 54,506.68/x
  3. Step 3: Cross multiply
    81,368.52x = 112,282.90 × 54,506.68
  4. Step 4: Simplify right side
    81,368.52x = 6,120,168,099.77
  5. Step 5: Solve for x
    x = 6,120,168,099.77/81,368.52
  6. Step 6: Final answer
    x = 75,215.43

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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.