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Finding the Fourth Proportional to 69,132.70, 103,700.42 and 21,746.79

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Solution

The fourth proportional to 69,132.70, 103,700.42 and 21,746.79 is: 32,620.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,132.70 : 103,700.42 = 21,746.79 : x
  2. Step 2: Convert to fraction form
    69,132.70/103,700.42 = 21,746.79/x
  3. Step 3: Cross multiply
    69,132.70x = 103,700.42 × 21,746.79
  4. Step 4: Simplify right side
    69,132.70x = 2,255,151,421.17
  5. Step 5: Solve for x
    x = 2,255,151,421.17/69,132.70
  6. Step 6: Final answer
    x = 32,620.62

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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.