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Finding the Fourth Proportional to 81,374.42, 112,280.28 and 47,388.44

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Solution

The fourth proportional to 81,374.42, 112,280.28 and 47,388.44 is: 65,386.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,374.42 : 112,280.28 = 47,388.44 : x
  2. Step 2: Convert to fraction form
    81,374.42/112,280.28 = 47,388.44/x
  3. Step 3: Cross multiply
    81,374.42x = 112,280.28 × 47,388.44
  4. Step 4: Simplify right side
    81,374.42x = 5,320,787,311.96
  5. Step 5: Solve for x
    x = 5,320,787,311.96/81,374.42
  6. Step 6: Final answer
    x = 65,386.49

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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.