Home / 83,842.20-125,720.10-31,224.60

Finding the Fourth Proportional to 83,842.20, 125,720.10 and 31,224.60

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Solution

The fourth proportional to 83,842.20, 125,720.10 and 31,224.60 is: 46,820.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,842.20 : 125,720.10 = 31,224.60 : x
  2. Step 2: Convert to fraction form
    83,842.20/125,720.10 = 31,224.60/x
  3. Step 3: Cross multiply
    83,842.20x = 125,720.10 × 31,224.60
  4. Step 4: Simplify right side
    83,842.20x = 3,925,559,834.46
  5. Step 5: Solve for x
    x = 3,925,559,834.46/83,842.20
  6. Step 6: Final answer
    x = 46,820.81

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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.