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Finding the Fourth Proportional to 48,015.20, 72,001.20 and 18,423.20

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Solution

The fourth proportional to 48,015.20, 72,001.20 and 18,423.20 is: 27,626.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,015.20 : 72,001.20 = 18,423.20 : x
  2. Step 2: Convert to fraction form
    48,015.20/72,001.20 = 18,423.20/x
  3. Step 3: Cross multiply
    48,015.20x = 72,001.20 × 18,423.20
  4. Step 4: Simplify right side
    48,015.20x = 1,326,492,507.84
  5. Step 5: Solve for x
    x = 1,326,492,507.84/48,015.20
  6. Step 6: Final answer
    x = 27,626.51

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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.