Home / 74,922.40-103,455.12-49,885.60

Finding the Fourth Proportional to 74,922.40, 103,455.12 and 49,885.60

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Solution

The fourth proportional to 74,922.40, 103,455.12 and 49,885.60 is: 68,883.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,922.40 : 103,455.12 = 49,885.60 : x
  2. Step 2: Convert to fraction form
    74,922.40/103,455.12 = 49,885.60/x
  3. Step 3: Cross multiply
    74,922.40x = 103,455.12 × 49,885.60
  4. Step 4: Simplify right side
    74,922.40x = 5,160,920,734.27
  5. Step 5: Solve for x
    x = 5,160,920,734.27/74,922.40
  6. Step 6: Final answer
    x = 68,883.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.