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Finding the Fourth Proportional to 64,763.52, 97,145.15 and 20,394.15

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Solution

The fourth proportional to 64,763.52, 97,145.15 and 20,394.15 is: 30,591.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,763.52 : 97,145.15 = 20,394.15 : x
  2. Step 2: Convert to fraction form
    64,763.52/97,145.15 = 20,394.15/x
  3. Step 3: Cross multiply
    64,763.52x = 97,145.15 × 20,394.15
  4. Step 4: Simplify right side
    64,763.52x = 1,981,192,658.90
  5. Step 5: Solve for x
    x = 1,981,192,658.90/64,763.52
  6. Step 6: Final answer
    x = 30,591.18

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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.