Home / 91,485.74-137,247.84-31,519.66

Finding the Fourth Proportional to 91,485.74, 137,247.84 and 31,519.66

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Solution

The fourth proportional to 91,485.74, 137,247.84 and 31,519.66 is: 47,286.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,485.74 : 137,247.84 = 31,519.66 : x
  2. Step 2: Convert to fraction form
    91,485.74/137,247.84 = 31,519.66/x
  3. Step 3: Cross multiply
    91,485.74x = 137,247.84 × 31,519.66
  4. Step 4: Simplify right side
    91,485.74x = 4,326,005,252.53
  5. Step 5: Solve for x
    x = 4,326,005,252.53/91,485.74
  6. Step 6: Final answer
    x = 47,286.12

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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.