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Finding the Fourth Proportional to 70,375.32, 97,105.50 and 40,155.84

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Solution

The fourth proportional to 70,375.32, 97,105.50 and 40,155.84 is: 55,407.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,375.32 : 97,105.50 = 40,155.84 : x
  2. Step 2: Convert to fraction form
    70,375.32/97,105.50 = 40,155.84/x
  3. Step 3: Cross multiply
    70,375.32x = 97,105.50 × 40,155.84
  4. Step 4: Simplify right side
    70,375.32x = 3,899,352,921.12
  5. Step 5: Solve for x
    x = 3,899,352,921.12/70,375.32
  6. Step 6: Final answer
    x = 55,407.96

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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.