Home / 71,811.39-107,667.12-31,808.66

Finding the Fourth Proportional to 71,811.39, 107,667.12 and 31,808.66

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Solution

The fourth proportional to 71,811.39, 107,667.12 and 31,808.66 is: 47,690.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,811.39 : 107,667.12 = 31,808.66 : x
  2. Step 2: Convert to fraction form
    71,811.39/107,667.12 = 31,808.66/x
  3. Step 3: Cross multiply
    71,811.39x = 107,667.12 × 31,808.66
  4. Step 4: Simplify right side
    71,811.39x = 3,424,746,813.26
  5. Step 5: Solve for x
    x = 3,424,746,813.26/71,811.39
  6. Step 6: Final answer
    x = 47,690.86

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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.