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Finding the Fourth Proportional to 70,591.97, 97,418.49 and 38,761

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Solution

The fourth proportional to 70,591.97, 97,418.49 and 38,761 is: 53,491.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,591.97 : 97,418.49 = 38,761 : x
  2. Step 2: Convert to fraction form
    70,591.97/97,418.49 = 38,761/x
  3. Step 3: Cross multiply
    70,591.97x = 97,418.49 × 38,761
  4. Step 4: Simplify right side
    70,591.97x = 3,776,038,090.89
  5. Step 5: Solve for x
    x = 3,776,038,090.89/70,591.97
  6. Step 6: Final answer
    x = 53,491.04

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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.