Home / 90,306.71-135,466.55-31,141.52

Finding the Fourth Proportional to 90,306.71, 135,466.55 and 31,141.52

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Solution

The fourth proportional to 90,306.71, 135,466.55 and 31,141.52 is: 46,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,306.71 : 135,466.55 = 31,141.52 : x
  2. Step 2: Convert to fraction form
    90,306.71/135,466.55 = 31,141.52/x
  3. Step 3: Cross multiply
    90,306.71x = 135,466.55 × 31,141.52
  4. Step 4: Simplify right side
    90,306.71x = 4,218,633,443.12
  5. Step 5: Solve for x
    x = 4,218,633,443.12/90,306.71
  6. Step 6: Final answer
    x = 46,714.51

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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.