Home / 77,310.12-115,928.51-29,947.40

Finding the Fourth Proportional to 77,310.12, 115,928.51 and 29,947.40

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Solution

The fourth proportional to 77,310.12, 115,928.51 and 29,947.40 is: 44,906.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310.12 : 115,928.51 = 29,947.40 : x
  2. Step 2: Convert to fraction form
    77,310.12/115,928.51 = 29,947.40/x
  3. Step 3: Cross multiply
    77,310.12x = 115,928.51 × 29,947.40
  4. Step 4: Simplify right side
    77,310.12x = 3,471,756,730.99
  5. Step 5: Solve for x
    x = 3,471,756,730.99/77,310.12
  6. Step 6: Final answer
    x = 44,906.89

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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.