Home / 85,074.35-127,663.16-31,805.10

Finding the Fourth Proportional to 85,074.35, 127,663.16 and 31,805.10

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Solution

The fourth proportional to 85,074.35, 127,663.16 and 31,805.10 is: 47,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,074.35 : 127,663.16 = 31,805.10 : x
  2. Step 2: Convert to fraction form
    85,074.35/127,663.16 = 31,805.10/x
  3. Step 3: Cross multiply
    85,074.35x = 127,663.16 × 31,805.10
  4. Step 4: Simplify right side
    85,074.35x = 4,060,339,411.09
  5. Step 5: Solve for x
    x = 4,060,339,411.09/85,074.35
  6. Step 6: Final answer
    x = 47,726.95

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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.