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Finding the Fourth Proportional to 61,235.66, 91,614.75 and 53,679.23

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Solution

The fourth proportional to 61,235.66, 91,614.75 and 53,679.23 is: 80,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,235.66 : 91,614.75 = 53,679.23 : x
  2. Step 2: Convert to fraction form
    61,235.66/91,614.75 = 53,679.23/x
  3. Step 3: Cross multiply
    61,235.66x = 91,614.75 × 53,679.23
  4. Step 4: Simplify right side
    61,235.66x = 4,917,809,603.10
  5. Step 5: Solve for x
    x = 4,917,809,603.10/61,235.66
  6. Step 6: Final answer
    x = 80,309.57

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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.