Home / 91,076.08-136,581.31-38,489.66

Finding the Fourth Proportional to 91,076.08, 136,581.31 and 38,489.66

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Solution

The fourth proportional to 91,076.08, 136,581.31 and 38,489.66 is: 57,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,076.08 : 136,581.31 = 38,489.66 : x
  2. Step 2: Convert to fraction form
    91,076.08/136,581.31 = 38,489.66/x
  3. Step 3: Cross multiply
    91,076.08x = 136,581.31 × 38,489.66
  4. Step 4: Simplify right side
    91,076.08x = 5,256,968,528.28
  5. Step 5: Solve for x
    x = 5,256,968,528.28/91,076.08
  6. Step 6: Final answer
    x = 57,720.63

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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.