Home / 83,910.17-125,861.13-31,315.56

Finding the Fourth Proportional to 83,910.17, 125,861.13 and 31,315.56

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Solution

The fourth proportional to 83,910.17, 125,861.13 and 31,315.56 is: 46,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,910.17 : 125,861.13 = 31,315.56 : x
  2. Step 2: Convert to fraction form
    83,910.17/125,861.13 = 31,315.56/x
  3. Step 3: Cross multiply
    83,910.17x = 125,861.13 × 31,315.56
  4. Step 4: Simplify right side
    83,910.17x = 3,941,411,768.18
  5. Step 5: Solve for x
    x = 3,941,411,768.18/83,910.17
  6. Step 6: Final answer
    x = 46,971.80

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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.