Home / 61,281.48-91,922.28-19,161.78

Finding the Fourth Proportional to 61,281.48, 91,922.28 and 19,161.78

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Solution

The fourth proportional to 61,281.48, 91,922.28 and 19,161.78 is: 28,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,281.48 : 91,922.28 = 19,161.78 : x
  2. Step 2: Convert to fraction form
    61,281.48/91,922.28 = 19,161.78/x
  3. Step 3: Cross multiply
    61,281.48x = 91,922.28 × 19,161.78
  4. Step 4: Simplify right side
    61,281.48x = 1,761,394,506.46
  5. Step 5: Solve for x
    x = 1,761,394,506.46/61,281.48
  6. Step 6: Final answer
    x = 28,742.69

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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.