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Finding the Fourth Proportional to 48,659.95, 72,949.37 and 20,601.55

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Solution

The fourth proportional to 48,659.95, 72,949.37 and 20,601.55 is: 30,885.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,659.95 : 72,949.37 = 20,601.55 : x
  2. Step 2: Convert to fraction form
    48,659.95/72,949.37 = 20,601.55/x
  3. Step 3: Cross multiply
    48,659.95x = 72,949.37 × 20,601.55
  4. Step 4: Simplify right side
    48,659.95x = 1,502,869,990.52
  5. Step 5: Solve for x
    x = 1,502,869,990.52/48,659.95
  6. Step 6: Final answer
    x = 30,885.15

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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.