Home / 90,242.16-135,321.12-34,038.96

Finding the Fourth Proportional to 90,242.16, 135,321.12 and 34,038.96

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Solution

The fourth proportional to 90,242.16, 135,321.12 and 34,038.96 is: 51,042.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,242.16 : 135,321.12 = 34,038.96 : x
  2. Step 2: Convert to fraction form
    90,242.16/135,321.12 = 34,038.96/x
  3. Step 3: Cross multiply
    90,242.16x = 135,321.12 × 34,038.96
  4. Step 4: Simplify right side
    90,242.16x = 4,606,190,190.84
  5. Step 5: Solve for x
    x = 4,606,190,190.84/90,242.16
  6. Step 6: Final answer
    x = 51,042.55

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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.