Home / 85,350.03-127,929.57-31,990.65

Finding the Fourth Proportional to 85,350.03, 127,929.57 and 31,990.65

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Solution

The fourth proportional to 85,350.03, 127,929.57 and 31,990.65 is: 47,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,350.03 : 127,929.57 = 31,990.65 : x
  2. Step 2: Convert to fraction form
    85,350.03/127,929.57 = 31,990.65/x
  3. Step 3: Cross multiply
    85,350.03x = 127,929.57 × 31,990.65
  4. Step 4: Simplify right side
    85,350.03x = 4,092,550,098.52
  5. Step 5: Solve for x
    x = 4,092,550,098.52/85,350.03
  6. Step 6: Final answer
    x = 47,950.19

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1.5x scale

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.