Home / 69,120.14-103,693.77-31,681.13

Finding the Fourth Proportional to 69,120.14, 103,693.77 and 31,681.13

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Solution

The fourth proportional to 69,120.14, 103,693.77 and 31,681.13 is: 47,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,120.14 : 103,693.77 = 31,681.13 : x
  2. Step 2: Convert to fraction form
    69,120.14/103,693.77 = 31,681.13/x
  3. Step 3: Cross multiply
    69,120.14x = 103,693.77 × 31,681.13
  4. Step 4: Simplify right side
    69,120.14x = 3,285,135,289.09
  5. Step 5: Solve for x
    x = 3,285,135,289.09/69,120.14
  6. Step 6: Final answer
    x = 47,527.91

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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.