Home / 83,939.22-115,839.05-47,638.67

Finding the Fourth Proportional to 83,939.22, 115,839.05 and 47,638.67

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Solution

The fourth proportional to 83,939.22, 115,839.05 and 47,638.67 is: 65,743.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,939.22 : 115,839.05 = 47,638.67 : x
  2. Step 2: Convert to fraction form
    83,939.22/115,839.05 = 47,638.67/x
  3. Step 3: Cross multiply
    83,939.22x = 115,839.05 × 47,638.67
  4. Step 4: Simplify right side
    83,939.22x = 5,518,417,458.67
  5. Step 5: Solve for x
    x = 5,518,417,458.67/83,939.22
  6. Step 6: Final answer
    x = 65,743.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.