Home / 75,679.20-113,518.80-63,869.40

Finding the Fourth Proportional to 75,679.20, 113,518.80 and 63,869.40

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Solution

The fourth proportional to 75,679.20, 113,518.80 and 63,869.40 is: 95,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,679.20 : 113,518.80 = 63,869.40 : x
  2. Step 2: Convert to fraction form
    75,679.20/113,518.80 = 63,869.40/x
  3. Step 3: Cross multiply
    75,679.20x = 113,518.80 × 63,869.40
  4. Step 4: Simplify right side
    75,679.20x = 7,250,377,644.72
  5. Step 5: Solve for x
    x = 7,250,377,644.72/75,679.20
  6. Step 6: Final answer
    x = 95,804.10

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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.