Home / 40,763.20-61,144.80-19,982.40

Finding the Fourth Proportional to 40,763.20, 61,144.80 and 19,982.40

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Solution

The fourth proportional to 40,763.20, 61,144.80 and 19,982.40 is: 29,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,763.20 : 61,144.80 = 19,982.40 : x
  2. Step 2: Convert to fraction form
    40,763.20/61,144.80 = 19,982.40/x
  3. Step 3: Cross multiply
    40,763.20x = 61,144.80 × 19,982.40
  4. Step 4: Simplify right side
    40,763.20x = 1,221,819,851.52
  5. Step 5: Solve for x
    x = 1,221,819,851.52/40,763.20
  6. Step 6: Final answer
    x = 29,973.60

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1.5x scale

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.