Home / 91,003.92-136,278-57,623.28

Finding the Fourth Proportional to 91,003.92, 136,278 and 57,623.28

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Solution

The fourth proportional to 91,003.92, 136,278 and 57,623.28 is: 86,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,003.92 : 136,278 = 57,623.28 : x
  2. Step 2: Convert to fraction form
    91,003.92/136,278 = 57,623.28/x
  3. Step 3: Cross multiply
    91,003.92x = 136,278 × 57,623.28
  4. Step 4: Simplify right side
    91,003.92x = 7,852,785,351.84
  5. Step 5: Solve for x
    x = 7,852,785,351.84/91,003.92
  6. Step 6: Final answer
    x = 86,290.63

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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.