Home / 90,981.18-136,487.97-31,006.33

Finding the Fourth Proportional to 90,981.18, 136,487.97 and 31,006.33

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Solution

The fourth proportional to 90,981.18, 136,487.97 and 31,006.33 is: 46,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,981.18 : 136,487.97 = 31,006.33 : x
  2. Step 2: Convert to fraction form
    90,981.18/136,487.97 = 31,006.33/x
  3. Step 3: Cross multiply
    90,981.18x = 136,487.97 × 31,006.33
  4. Step 4: Simplify right side
    90,981.18x = 4,231,991,038.85
  5. Step 5: Solve for x
    x = 4,231,991,038.85/90,981.18
  6. Step 6: Final answer
    x = 46,515.02

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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.