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Finding the Fourth Proportional to 71,364.32, 98,427.32 and 48,721.56

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Solution

The fourth proportional to 71,364.32, 98,427.32 and 48,721.56 is: 67,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,364.32 : 98,427.32 = 48,721.56 : x
  2. Step 2: Convert to fraction form
    71,364.32/98,427.32 = 48,721.56/x
  3. Step 3: Cross multiply
    71,364.32x = 98,427.32 × 48,721.56
  4. Step 4: Simplify right side
    71,364.32x = 4,795,532,577.02
  5. Step 5: Solve for x
    x = 4,795,532,577.02/71,364.32
  6. Step 6: Final answer
    x = 67,197.90

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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.