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Finding the Fourth Proportional to 48,418.40, 72,653.40 and 18,837.20

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Solution

The fourth proportional to 48,418.40, 72,653.40 and 18,837.20 is: 28,265.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,418.40 : 72,653.40 = 18,837.20 : x
  2. Step 2: Convert to fraction form
    48,418.40/72,653.40 = 18,837.20/x
  3. Step 3: Cross multiply
    48,418.40x = 72,653.40 × 18,837.20
  4. Step 4: Simplify right side
    48,418.40x = 1,368,586,626.48
  5. Step 5: Solve for x
    x = 1,368,586,626.48/48,418.40
  6. Step 6: Final answer
    x = 28,265.84

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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.