Home / 91,126.89-136,700.07-38,541.69

Finding the Fourth Proportional to 91,126.89, 136,700.07 and 38,541.69

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Solution

The fourth proportional to 91,126.89, 136,700.07 and 38,541.69 is: 57,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,126.89 : 136,700.07 = 38,541.69 : x
  2. Step 2: Convert to fraction form
    91,126.89/136,700.07 = 38,541.69/x
  3. Step 3: Cross multiply
    91,126.89x = 136,700.07 × 38,541.69
  4. Step 4: Simplify right side
    91,126.89x = 5,268,651,720.92
  5. Step 5: Solve for x
    x = 5,268,651,720.92/91,126.89
  6. Step 6: Final answer
    x = 57,816.65

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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.