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Finding the Fourth Proportional to 45,279.68, 67,904.12 and 15,690.60

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Solution

The fourth proportional to 45,279.68, 67,904.12 and 15,690.60 is: 23,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,279.68 : 67,904.12 = 15,690.60 : x
  2. Step 2: Convert to fraction form
    45,279.68/67,904.12 = 15,690.60/x
  3. Step 3: Cross multiply
    45,279.68x = 67,904.12 × 15,690.60
  4. Step 4: Simplify right side
    45,279.68x = 1,065,456,306.82
  5. Step 5: Solve for x
    x = 1,065,456,306.82/45,279.68
  6. Step 6: Final answer
    x = 23,530.56

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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.