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Finding the Fourth Proportional to 70,375.60, 97,119.90 and 40,160.32

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Solution

The fourth proportional to 70,375.60, 97,119.90 and 40,160.32 is: 55,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,375.60 : 97,119.90 = 40,160.32 : x
  2. Step 2: Convert to fraction form
    70,375.60/97,119.90 = 40,160.32/x
  3. Step 3: Cross multiply
    70,375.60x = 97,119.90 × 40,160.32
  4. Step 4: Simplify right side
    70,375.60x = 3,900,365,575.97
  5. Step 5: Solve for x
    x = 3,900,365,575.97/70,375.60
  6. Step 6: Final answer
    x = 55,422.13

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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.