Home / 91,154.66-136,731.18-31,976.47

Finding the Fourth Proportional to 91,154.66, 136,731.18 and 31,976.47

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Solution

The fourth proportional to 91,154.66, 136,731.18 and 31,976.47 is: 47,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,154.66 : 136,731.18 = 31,976.47 : x
  2. Step 2: Convert to fraction form
    91,154.66/136,731.18 = 31,976.47/x
  3. Step 3: Cross multiply
    91,154.66x = 136,731.18 × 31,976.47
  4. Step 4: Simplify right side
    91,154.66x = 4,372,179,791.68
  5. Step 5: Solve for x
    x = 4,372,179,791.68/91,154.66
  6. Step 6: Final answer
    x = 47,964.41

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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.