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Finding the Fourth Proportional to 62,116.78, 85,699.32 and 40,619.11

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Solution

The fourth proportional to 62,116.78, 85,699.32 and 40,619.11 is: 56,040.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,116.78 : 85,699.32 = 40,619.11 : x
  2. Step 2: Convert to fraction form
    62,116.78/85,699.32 = 40,619.11/x
  3. Step 3: Cross multiply
    62,116.78x = 85,699.32 × 40,619.11
  4. Step 4: Simplify right side
    62,116.78x = 3,481,030,106.01
  5. Step 5: Solve for x
    x = 3,481,030,106.01/62,116.78
  6. Step 6: Final answer
    x = 56,040.09

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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.