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Finding the Fourth Proportional to 48,438.87, 72,659.03 and 31,904.79

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Solution

The fourth proportional to 48,438.87, 72,659.03 and 31,904.79 is: 47,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,438.87 : 72,659.03 = 31,904.79 : x
  2. Step 2: Convert to fraction form
    48,438.87/72,659.03 = 31,904.79/x
  3. Step 3: Cross multiply
    48,438.87x = 72,659.03 × 31,904.79
  4. Step 4: Simplify right side
    48,438.87x = 2,318,170,934.23
  5. Step 5: Solve for x
    x = 2,318,170,934.23/48,438.87
  6. Step 6: Final answer
    x = 47,857.66

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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.