Home / 90,730.76-136,127.36-40,845.88

Finding the Fourth Proportional to 90,730.76, 136,127.36 and 40,845.88

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Solution

The fourth proportional to 90,730.76, 136,127.36 and 40,845.88 is: 61,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,730.76 : 136,127.36 = 40,845.88 : x
  2. Step 2: Convert to fraction form
    90,730.76/136,127.36 = 40,845.88/x
  3. Step 3: Cross multiply
    90,730.76x = 136,127.36 × 40,845.88
  4. Step 4: Simplify right side
    90,730.76x = 5,560,241,811.28
  5. Step 5: Solve for x
    x = 5,560,241,811.28/90,730.76
  6. Step 6: Final answer
    x = 61,282.87

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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.