Home / 91,424.04-137,139.04-31,451.88

Finding the Fourth Proportional to 91,424.04, 137,139.04 and 31,451.88

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Solution

The fourth proportional to 91,424.04, 137,139.04 and 31,451.88 is: 47,178.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,424.04 : 137,139.04 = 31,451.88 : x
  2. Step 2: Convert to fraction form
    91,424.04/137,139.04 = 31,451.88/x
  3. Step 3: Cross multiply
    91,424.04x = 137,139.04 × 31,451.88
  4. Step 4: Simplify right side
    91,424.04x = 4,313,280,629.40
  5. Step 5: Solve for x
    x = 4,313,280,629.40/91,424.04
  6. Step 6: Final answer
    x = 47,178.85

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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.