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Finding the Fourth Proportional to 115,422.78, 173,211.93 and 45,293.82

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Solution

The fourth proportional to 115,422.78, 173,211.93 and 45,293.82 is: 67,971.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,422.78 : 173,211.93 = 45,293.82 : x
  2. Step 2: Convert to fraction form
    115,422.78/173,211.93 = 45,293.82/x
  3. Step 3: Cross multiply
    115,422.78x = 173,211.93 × 45,293.82
  4. Step 4: Simplify right side
    115,422.78x = 7,845,429,979.27
  5. Step 5: Solve for x
    x = 7,845,429,979.27/115,422.78
  6. Step 6: Final answer
    x = 67,971.24

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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.