Home / 103,836.92-155,768.34-40,648.88

Finding the Fourth Proportional to 103,836.92, 155,768.34 and 40,648.88

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Solution

The fourth proportional to 103,836.92, 155,768.34 and 40,648.88 is: 60,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,836.92 : 155,768.34 = 40,648.88 : x
  2. Step 2: Convert to fraction form
    103,836.92/155,768.34 = 40,648.88/x
  3. Step 3: Cross multiply
    103,836.92x = 155,768.34 × 40,648.88
  4. Step 4: Simplify right side
    103,836.92x = 6,331,808,560.46
  5. Step 5: Solve for x
    x = 6,331,808,560.46/103,836.92
  6. Step 6: Final answer
    x = 60,978.39

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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.