Home / 40,849.20-61,225.20-21,117.60

Finding the Fourth Proportional to 40,849.20, 61,225.20 and 21,117.60

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Solution

The fourth proportional to 40,849.20, 61,225.20 and 21,117.60 is: 31,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,849.20 : 61,225.20 = 21,117.60 : x
  2. Step 2: Convert to fraction form
    40,849.20/61,225.20 = 21,117.60/x
  3. Step 3: Cross multiply
    40,849.20x = 61,225.20 × 21,117.60
  4. Step 4: Simplify right side
    40,849.20x = 1,292,929,283.52
  5. Step 5: Solve for x
    x = 1,292,929,283.52/40,849.20
  6. Step 6: Final answer
    x = 31,651.28

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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.