Home / 80,579.40-120,869.10-61,953.45

Finding the Fourth Proportional to 80,579.40, 120,869.10 and 61,953.45

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Solution

The fourth proportional to 80,579.40, 120,869.10 and 61,953.45 is: 92,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,579.40 : 120,869.10 = 61,953.45 : x
  2. Step 2: Convert to fraction form
    80,579.40/120,869.10 = 61,953.45/x
  3. Step 3: Cross multiply
    80,579.40x = 120,869.10 × 61,953.45
  4. Step 4: Simplify right side
    80,579.40x = 7,488,257,743.40
  5. Step 5: Solve for x
    x = 7,488,257,743.40/80,579.40
  6. Step 6: Final answer
    x = 92,930.18

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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.