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Finding the Fourth Proportional to 69,089.70, 103,634.55 and 67,553.70

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Solution

The fourth proportional to 69,089.70, 103,634.55 and 67,553.70 is: 101,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,089.70 : 103,634.55 = 67,553.70 : x
  2. Step 2: Convert to fraction form
    69,089.70/103,634.55 = 67,553.70/x
  3. Step 3: Cross multiply
    69,089.70x = 103,634.55 × 67,553.70
  4. Step 4: Simplify right side
    69,089.70x = 7,000,897,300.34
  5. Step 5: Solve for x
    x = 7,000,897,300.34/69,089.70
  6. Step 6: Final answer
    x = 101,330.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.