Home / 84,670.25-126,989.17-42,538.65

Finding the Fourth Proportional to 84,670.25, 126,989.17 and 42,538.65

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Solution

The fourth proportional to 84,670.25, 126,989.17 and 42,538.65 is: 63,799.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,670.25 : 126,989.17 = 42,538.65 : x
  2. Step 2: Convert to fraction form
    84,670.25/126,989.17 = 42,538.65/x
  3. Step 3: Cross multiply
    84,670.25x = 126,989.17 × 42,538.65
  4. Step 4: Simplify right side
    84,670.25x = 5,401,947,988.18
  5. Step 5: Solve for x
    x = 5,401,947,988.18/84,670.25
  6. Step 6: Final answer
    x = 63,799.84

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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.