Home / 91,890.36-137,854.67-28,707.93

Finding the Fourth Proportional to 91,890.36, 137,854.67 and 28,707.93

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Solution

The fourth proportional to 91,890.36, 137,854.67 and 28,707.93 is: 43,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,890.36 : 137,854.67 = 28,707.93 : x
  2. Step 2: Convert to fraction form
    91,890.36/137,854.67 = 28,707.93/x
  3. Step 3: Cross multiply
    91,890.36x = 137,854.67 × 28,707.93
  4. Step 4: Simplify right side
    91,890.36x = 3,957,522,072.99
  5. Step 5: Solve for x
    x = 3,957,522,072.99/91,890.36
  6. Step 6: Final answer
    x = 43,067.87

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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.