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Finding the Fourth Proportional to 71,145.44, 98,197.07 and 40,948.20

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Solution

The fourth proportional to 71,145.44, 98,197.07 and 40,948.20 is: 56,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,145.44 : 98,197.07 = 40,948.20 : x
  2. Step 2: Convert to fraction form
    71,145.44/98,197.07 = 40,948.20/x
  3. Step 3: Cross multiply
    71,145.44x = 98,197.07 × 40,948.20
  4. Step 4: Simplify right side
    71,145.44x = 4,020,993,261.77
  5. Step 5: Solve for x
    x = 4,020,993,261.77/71,145.44
  6. Step 6: Final answer
    x = 56,517.93

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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.