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Finding the Fourth Proportional to 80,763.58, 121,164.90 and 25,359.58

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Solution

The fourth proportional to 80,763.58, 121,164.90 and 25,359.58 is: 38,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,763.58 : 121,164.90 = 25,359.58 : x
  2. Step 2: Convert to fraction form
    80,763.58/121,164.90 = 25,359.58/x
  3. Step 3: Cross multiply
    80,763.58x = 121,164.90 × 25,359.58
  4. Step 4: Simplify right side
    80,763.58x = 3,072,690,974.74
  5. Step 5: Solve for x
    x = 3,072,690,974.74/80,763.58
  6. Step 6: Final answer
    x = 38,045.50

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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.