Home / 91,161.36-136,724.70-38,607.72

Finding the Fourth Proportional to 91,161.36, 136,724.70 and 38,607.72

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Solution

The fourth proportional to 91,161.36, 136,724.70 and 38,607.72 is: 57,904.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,161.36 : 136,724.70 = 38,607.72 : x
  2. Step 2: Convert to fraction form
    91,161.36/136,724.70 = 38,607.72/x
  3. Step 3: Cross multiply
    91,161.36x = 136,724.70 × 38,607.72
  4. Step 4: Simplify right side
    91,161.36x = 5,278,628,934.68
  5. Step 5: Solve for x
    x = 5,278,628,934.68/91,161.36
  6. Step 6: Final answer
    x = 57,904.24

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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.