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Finding the Fourth Proportional to 48,179.60, 72,301.80 and 21,870.80

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Solution

The fourth proportional to 48,179.60, 72,301.80 and 21,870.80 is: 32,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,179.60 : 72,301.80 = 21,870.80 : x
  2. Step 2: Convert to fraction form
    48,179.60/72,301.80 = 21,870.80/x
  3. Step 3: Cross multiply
    48,179.60x = 72,301.80 × 21,870.80
  4. Step 4: Simplify right side
    48,179.60x = 1,581,298,207.44
  5. Step 5: Solve for x
    x = 1,581,298,207.44/48,179.60
  6. Step 6: Final answer
    x = 32,820.91

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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.