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Finding the Fourth Proportional to 48,369.68, 72,557.88 and 20,279.12

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Solution

The fourth proportional to 48,369.68, 72,557.88 and 20,279.12 is: 30,420.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,369.68 : 72,557.88 = 20,279.12 : x
  2. Step 2: Convert to fraction form
    48,369.68/72,557.88 = 20,279.12/x
  3. Step 3: Cross multiply
    48,369.68x = 72,557.88 × 20,279.12
  4. Step 4: Simplify right side
    48,369.68x = 1,471,409,955.47
  5. Step 5: Solve for x
    x = 1,471,409,955.47/48,369.68
  6. Step 6: Final answer
    x = 30,420.09

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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.