Home / 74,307.57-111,271.05-40,990.60

Finding the Fourth Proportional to 74,307.57, 111,271.05 and 40,990.60

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Solution

The fourth proportional to 74,307.57, 111,271.05 and 40,990.60 is: 61,380.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,307.57 : 111,271.05 = 40,990.60 : x
  2. Step 2: Convert to fraction form
    74,307.57/111,271.05 = 40,990.60/x
  3. Step 3: Cross multiply
    74,307.57x = 111,271.05 × 40,990.60
  4. Step 4: Simplify right side
    74,307.57x = 4,561,067,102.13
  5. Step 5: Solve for x
    x = 4,561,067,102.13/74,307.57
  6. Step 6: Final answer
    x = 61,380.93

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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.