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Finding the Fourth Proportional to 48,472.98, 72,679.69 and 18,856.32

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Solution

The fourth proportional to 48,472.98, 72,679.69 and 18,856.32 is: 28,272.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,472.98 : 72,679.69 = 18,856.32 : x
  2. Step 2: Convert to fraction form
    48,472.98/72,679.69 = 18,856.32/x
  3. Step 3: Cross multiply
    48,472.98x = 72,679.69 × 18,856.32
  4. Step 4: Simplify right side
    48,472.98x = 1,370,471,492.14
  5. Step 5: Solve for x
    x = 1,370,471,492.14/48,472.98
  6. Step 6: Final answer
    x = 28,272.90

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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.