Home / 90,639.57-135,959.41-34,466.72

Finding the Fourth Proportional to 90,639.57, 135,959.41 and 34,466.72

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Solution

The fourth proportional to 90,639.57, 135,959.41 and 34,466.72 is: 51,700.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.57 : 135,959.41 = 34,466.72 : x
  2. Step 2: Convert to fraction form
    90,639.57/135,959.41 = 34,466.72/x
  3. Step 3: Cross multiply
    90,639.57x = 135,959.41 × 34,466.72
  4. Step 4: Simplify right side
    90,639.57x = 4,686,074,279.12
  5. Step 5: Solve for x
    x = 4,686,074,279.12/90,639.57
  6. Step 6: Final answer
    x = 51,700.09

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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.