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Finding the Fourth Proportional to 71,165.76, 98,211.52 and 47,251.20

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Solution

The fourth proportional to 71,165.76, 98,211.52 and 47,251.20 is: 65,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,165.76 : 98,211.52 = 47,251.20 : x
  2. Step 2: Convert to fraction form
    71,165.76/98,211.52 = 47,251.20/x
  3. Step 3: Cross multiply
    71,165.76x = 98,211.52 × 47,251.20
  4. Step 4: Simplify right side
    71,165.76x = 4,640,612,173.82
  5. Step 5: Solve for x
    x = 4,640,612,173.82/71,165.76
  6. Step 6: Final answer
    x = 65,208.50

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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.