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Finding the Fourth Proportional to 83,653.26, 125,479.13 and 20,473.65

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Solution

The fourth proportional to 83,653.26, 125,479.13 and 20,473.65 is: 30,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,653.26 : 125,479.13 = 20,473.65 : x
  2. Step 2: Convert to fraction form
    83,653.26/125,479.13 = 20,473.65/x
  3. Step 3: Cross multiply
    83,653.26x = 125,479.13 × 20,473.65
  4. Step 4: Simplify right side
    83,653.26x = 2,569,015,908.12
  5. Step 5: Solve for x
    x = 2,569,015,908.12/83,653.26
  6. Step 6: Final answer
    x = 30,710.29

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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.