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Finding the Fourth Proportional to 69,937.40, 96,290.70 and 65,168.12

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Solution

The fourth proportional to 69,937.40, 96,290.70 and 65,168.12 is: 89,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,937.40 : 96,290.70 = 65,168.12 : x
  2. Step 2: Convert to fraction form
    69,937.40/96,290.70 = 65,168.12/x
  3. Step 3: Cross multiply
    69,937.40x = 96,290.70 × 65,168.12
  4. Step 4: Simplify right side
    69,937.40x = 6,275,083,892.48
  5. Step 5: Solve for x
    x = 6,275,083,892.48/69,937.40
  6. Step 6: Final answer
    x = 89,724.29

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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.