Home / 97,854.12-146,790.39-31,278.42

Finding the Fourth Proportional to 97,854.12, 146,790.39 and 31,278.42

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Solution

The fourth proportional to 97,854.12, 146,790.39 and 31,278.42 is: 46,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,854.12 : 146,790.39 = 31,278.42 : x
  2. Step 2: Convert to fraction form
    97,854.12/146,790.39 = 31,278.42/x
  3. Step 3: Cross multiply
    97,854.12x = 146,790.39 × 31,278.42
  4. Step 4: Simplify right side
    97,854.12x = 4,591,371,470.38
  5. Step 5: Solve for x
    x = 4,591,371,470.38/97,854.12
  6. Step 6: Final answer
    x = 46,920.57

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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.