Home / 90,257.76-135,442.64-43,515.36

Finding the Fourth Proportional to 90,257.76, 135,442.64 and 43,515.36

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Solution

The fourth proportional to 90,257.76, 135,442.64 and 43,515.36 is: 65,300.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,257.76 : 135,442.64 = 43,515.36 : x
  2. Step 2: Convert to fraction form
    90,257.76/135,442.64 = 43,515.36/x
  3. Step 3: Cross multiply
    90,257.76x = 135,442.64 × 43,515.36
  4. Step 4: Simplify right side
    90,257.76x = 5,893,835,238.95
  5. Step 5: Solve for x
    x = 5,893,835,238.95/90,257.76
  6. Step 6: Final answer
    x = 65,300.04

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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.