Home / 74,918.40-103,449.60-49,881.60

Finding the Fourth Proportional to 74,918.40, 103,449.60 and 49,881.60

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Solution

The fourth proportional to 74,918.40, 103,449.60 and 49,881.60 is: 68,878.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,918.40 : 103,449.60 = 49,881.60 : x
  2. Step 2: Convert to fraction form
    74,918.40/103,449.60 = 49,881.60/x
  3. Step 3: Cross multiply
    74,918.40x = 103,449.60 × 49,881.60
  4. Step 4: Simplify right side
    74,918.40x = 5,160,231,567.36
  5. Step 5: Solve for x
    x = 5,160,231,567.36/74,918.40
  6. Step 6: Final answer
    x = 68,878.03

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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.