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Finding the Fourth Proportional to 48,479.60, 72,689.60 and 18,862.94

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Solution

The fourth proportional to 48,479.60, 72,689.60 and 18,862.94 is: 28,282.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,479.60 : 72,689.60 = 18,862.94 : x
  2. Step 2: Convert to fraction form
    48,479.60/72,689.60 = 18,862.94/x
  3. Step 3: Cross multiply
    48,479.60x = 72,689.60 × 18,862.94
  4. Step 4: Simplify right side
    48,479.60x = 1,371,139,563.42
  5. Step 5: Solve for x
    x = 1,371,139,563.42/48,479.60
  6. Step 6: Final answer
    x = 28,282.82

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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.