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Finding the Fourth Proportional to 48,236.80, 72,330.90 and 28,521.40

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Solution

The fourth proportional to 48,236.80, 72,330.90 and 28,521.40 is: 42,767.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,236.80 : 72,330.90 = 28,521.40 : x
  2. Step 2: Convert to fraction form
    48,236.80/72,330.90 = 28,521.40/x
  3. Step 3: Cross multiply
    48,236.80x = 72,330.90 × 28,521.40
  4. Step 4: Simplify right side
    48,236.80x = 2,062,978,531.26
  5. Step 5: Solve for x
    x = 2,062,978,531.26/48,236.80
  6. Step 6: Final answer
    x = 42,767.73

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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.