Home / 91,138.96-136,719.78-38,535.13

Finding the Fourth Proportional to 91,138.96, 136,719.78 and 38,535.13

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Solution

The fourth proportional to 91,138.96, 136,719.78 and 38,535.13 is: 57,807.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,138.96 : 136,719.78 = 38,535.13 : x
  2. Step 2: Convert to fraction form
    91,138.96/136,719.78 = 38,535.13/x
  3. Step 3: Cross multiply
    91,138.96x = 136,719.78 × 38,535.13
  4. Step 4: Simplify right side
    91,138.96x = 5,268,514,495.87
  5. Step 5: Solve for x
    x = 5,268,514,495.87/91,138.96
  6. Step 6: Final answer
    x = 57,807.49

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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.