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Finding the Fourth Proportional to 61,030.80, 91,351.80 and 43,534.80

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Solution

The fourth proportional to 61,030.80, 91,351.80 and 43,534.80 is: 65,163.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,030.80 : 91,351.80 = 43,534.80 : x
  2. Step 2: Convert to fraction form
    61,030.80/91,351.80 = 43,534.80/x
  3. Step 3: Cross multiply
    61,030.80x = 91,351.80 × 43,534.80
  4. Step 4: Simplify right side
    61,030.80x = 3,976,982,342.64
  5. Step 5: Solve for x
    x = 3,976,982,342.64/61,030.80
  6. Step 6: Final answer
    x = 65,163.53

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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.