Home / 91,465.76-136,644.40-57,917.18

Finding the Fourth Proportional to 91,465.76, 136,644.40 and 57,917.18

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Solution

The fourth proportional to 91,465.76, 136,644.40 and 57,917.18 is: 86,524.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,465.76 : 136,644.40 = 57,917.18 : x
  2. Step 2: Convert to fraction form
    91,465.76/136,644.40 = 57,917.18/x
  3. Step 3: Cross multiply
    91,465.76x = 136,644.40 × 57,917.18
  4. Step 4: Simplify right side
    91,465.76x = 7,914,058,310.79
  5. Step 5: Solve for x
    x = 7,914,058,310.79/91,465.76
  6. Step 6: Final answer
    x = 86,524.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.