Home / 80,755.40-121,154.70-57,427.40

Finding the Fourth Proportional to 80,755.40, 121,154.70 and 57,427.40

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Solution

The fourth proportional to 80,755.40, 121,154.70 and 57,427.40 is: 86,156.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,755.40 : 121,154.70 = 57,427.40 : x
  2. Step 2: Convert to fraction form
    80,755.40/121,154.70 = 57,427.40/x
  3. Step 3: Cross multiply
    80,755.40x = 121,154.70 × 57,427.40
  4. Step 4: Simplify right side
    80,755.40x = 6,957,599,418.78
  5. Step 5: Solve for x
    x = 6,957,599,418.78/80,755.40
  6. Step 6: Final answer
    x = 86,156.46

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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.