Home / 90,839.82-136,220.85-31,657.98

Finding the Fourth Proportional to 90,839.82, 136,220.85 and 31,657.98

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Solution

The fourth proportional to 90,839.82, 136,220.85 and 31,657.98 is: 47,473.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,839.82 : 136,220.85 = 31,657.98 : x
  2. Step 2: Convert to fraction form
    90,839.82/136,220.85 = 31,657.98/x
  3. Step 3: Cross multiply
    90,839.82x = 136,220.85 × 31,657.98
  4. Step 4: Simplify right side
    90,839.82x = 4,312,476,944.88
  5. Step 5: Solve for x
    x = 4,312,476,944.88/90,839.82
  6. Step 6: Final answer
    x = 47,473.42

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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.