Home / 91,390.49-137,077.06-28,193.64

Finding the Fourth Proportional to 91,390.49, 137,077.06 and 28,193.64

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Solution

The fourth proportional to 91,390.49, 137,077.06 and 28,193.64 is: 42,287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,390.49 : 137,077.06 = 28,193.64 : x
  2. Step 2: Convert to fraction form
    91,390.49/137,077.06 = 28,193.64/x
  3. Step 3: Cross multiply
    91,390.49x = 137,077.06 × 28,193.64
  4. Step 4: Simplify right side
    91,390.49x = 3,864,700,750.24
  5. Step 5: Solve for x
    x = 3,864,700,750.24/91,390.49
  6. Step 6: Final answer
    x = 42,287.78

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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.