Home / 90,648.41-135,925.88-40,685.68

Finding the Fourth Proportional to 90,648.41, 135,925.88 and 40,685.68

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Solution

The fourth proportional to 90,648.41, 135,925.88 and 40,685.68 is: 61,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,648.41 : 135,925.88 = 40,685.68 : x
  2. Step 2: Convert to fraction form
    90,648.41/135,925.88 = 40,685.68/x
  3. Step 3: Cross multiply
    90,648.41x = 135,925.88 × 40,685.68
  4. Step 4: Simplify right side
    90,648.41x = 5,530,236,279.48
  5. Step 5: Solve for x
    x = 5,530,236,279.48/90,648.41
  6. Step 6: Final answer
    x = 61,007.54

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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.