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Finding the Fourth Proportional to 48,282.72, 72,424.08 and 20,187.42

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Solution

The fourth proportional to 48,282.72, 72,424.08 and 20,187.42 is: 30,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,282.72 : 72,424.08 = 20,187.42 : x
  2. Step 2: Convert to fraction form
    48,282.72/72,424.08 = 20,187.42/x
  3. Step 3: Cross multiply
    48,282.72x = 72,424.08 × 20,187.42
  4. Step 4: Simplify right side
    48,282.72x = 1,462,055,321.07
  5. Step 5: Solve for x
    x = 1,462,055,321.07/48,282.72
  6. Step 6: Final answer
    x = 30,281.13

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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.