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Finding the Fourth Proportional to 60,306.60, 90,468.16 and 20,853.12

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Solution

The fourth proportional to 60,306.60, 90,468.16 and 20,853.12 is: 31,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,306.60 : 90,468.16 = 20,853.12 : x
  2. Step 2: Convert to fraction form
    60,306.60/90,468.16 = 20,853.12/x
  3. Step 3: Cross multiply
    60,306.60x = 90,468.16 × 20,853.12
  4. Step 4: Simplify right side
    60,306.60x = 1,886,543,396.66
  5. Step 5: Solve for x
    x = 1,886,543,396.66/60,306.60
  6. Step 6: Final answer
    x = 31,282.54

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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.