Home / 40,972.80-61,478.40-21,273.60

Finding the Fourth Proportional to 40,972.80, 61,478.40 and 21,273.60

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Solution

The fourth proportional to 40,972.80, 61,478.40 and 21,273.60 is: 31,920.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,972.80 : 61,478.40 = 21,273.60 : x
  2. Step 2: Convert to fraction form
    40,972.80/61,478.40 = 21,273.60/x
  3. Step 3: Cross multiply
    40,972.80x = 61,478.40 × 21,273.60
  4. Step 4: Simplify right side
    40,972.80x = 1,307,866,890.24
  5. Step 5: Solve for x
    x = 1,307,866,890.24/40,972.80
  6. Step 6: Final answer
    x = 31,920.37

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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.