Home / 74,911.16-103,418.88-51,072.86

Finding the Fourth Proportional to 74,911.16, 103,418.88 and 51,072.86

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Solution

The fourth proportional to 74,911.16, 103,418.88 and 51,072.86 is: 70,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,911.16 : 103,418.88 = 51,072.86 : x
  2. Step 2: Convert to fraction form
    74,911.16/103,418.88 = 51,072.86/x
  3. Step 3: Cross multiply
    74,911.16x = 103,418.88 × 51,072.86
  4. Step 4: Simplify right side
    74,911.16x = 5,281,897,979.60
  5. Step 5: Solve for x
    x = 5,281,897,979.60/74,911.16
  6. Step 6: Final answer
    x = 70,508.83

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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.