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Finding the Fourth Proportional to 71,015.57, 97,960.15 and 45,512.89

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Solution

The fourth proportional to 71,015.57, 97,960.15 and 45,512.89 is: 62,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,015.57 : 97,960.15 = 45,512.89 : x
  2. Step 2: Convert to fraction form
    71,015.57/97,960.15 = 45,512.89/x
  3. Step 3: Cross multiply
    71,015.57x = 97,960.15 × 45,512.89
  4. Step 4: Simplify right side
    71,015.57x = 4,458,449,343.32
  5. Step 5: Solve for x
    x = 4,458,449,343.32/71,015.57
  6. Step 6: Final answer
    x = 62,781.29

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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.