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Finding the Fourth Proportional to 67,689.92, 101,547.84 and 20,934.56

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Solution

The fourth proportional to 67,689.92, 101,547.84 and 20,934.56 is: 31,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,689.92 : 101,547.84 = 20,934.56 : x
  2. Step 2: Convert to fraction form
    67,689.92/101,547.84 = 20,934.56/x
  3. Step 3: Cross multiply
    67,689.92x = 101,547.84 × 20,934.56
  4. Step 4: Simplify right side
    67,689.92x = 2,125,859,349.35
  5. Step 5: Solve for x
    x = 2,125,859,349.35/67,689.92
  6. Step 6: Final answer
    x = 31,405.85

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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.