Home / 91,169.36-136,736.70-38,615.72

Finding the Fourth Proportional to 91,169.36, 136,736.70 and 38,615.72

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Solution

The fourth proportional to 91,169.36, 136,736.70 and 38,615.72 is: 57,916.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,169.36 : 136,736.70 = 38,615.72 : x
  2. Step 2: Convert to fraction form
    91,169.36/136,736.70 = 38,615.72/x
  3. Step 3: Cross multiply
    91,169.36x = 136,736.70 × 38,615.72
  4. Step 4: Simplify right side
    91,169.36x = 5,280,186,120.92
  5. Step 5: Solve for x
    x = 5,280,186,120.92/91,169.36
  6. Step 6: Final answer
    x = 57,916.24

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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.