Home / 91,214.18-136,842.53-31,243.30

Finding the Fourth Proportional to 91,214.18, 136,842.53 and 31,243.30

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Solution

The fourth proportional to 91,214.18, 136,842.53 and 31,243.30 is: 46,872.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,214.18 : 136,842.53 = 31,243.30 : x
  2. Step 2: Convert to fraction form
    91,214.18/136,842.53 = 31,243.30/x
  3. Step 3: Cross multiply
    91,214.18x = 136,842.53 × 31,243.30
  4. Step 4: Simplify right side
    91,214.18x = 4,275,412,217.55
  5. Step 5: Solve for x
    x = 4,275,412,217.55/91,214.18
  6. Step 6: Final answer
    x = 46,872.23

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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.