Home / 79,938.24-119,911.68-20,772.32

Finding the Fourth Proportional to 79,938.24, 119,911.68 and 20,772.32

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Solution

The fourth proportional to 79,938.24, 119,911.68 and 20,772.32 is: 31,159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,938.24 : 119,911.68 = 20,772.32 : x
  2. Step 2: Convert to fraction form
    79,938.24/119,911.68 = 20,772.32/x
  3. Step 3: Cross multiply
    79,938.24x = 119,911.68 × 20,772.32
  4. Step 4: Simplify right side
    79,938.24x = 2,490,843,788.70
  5. Step 5: Solve for x
    x = 2,490,843,788.70/79,938.24
  6. Step 6: Final answer
    x = 31,159.60

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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.