Home / 77,279.43-106,880.40-69,318.75

Finding the Fourth Proportional to 77,279.43, 106,880.40 and 69,318.75

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Solution

The fourth proportional to 77,279.43, 106,880.40 and 69,318.75 is: 95,870.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.43 : 106,880.40 = 69,318.75 : x
  2. Step 2: Convert to fraction form
    77,279.43/106,880.40 = 69,318.75/x
  3. Step 3: Cross multiply
    77,279.43x = 106,880.40 × 69,318.75
  4. Step 4: Simplify right side
    77,279.43x = 7,408,815,727.50
  5. Step 5: Solve for x
    x = 7,408,815,727.50/77,279.43
  6. Step 6: Final answer
    x = 95,870.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.