Home / 91,378.62-137,091.51-28,197.36

Finding the Fourth Proportional to 91,378.62, 137,091.51 and 28,197.36

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Solution

The fourth proportional to 91,378.62, 137,091.51 and 28,197.36 is: 42,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,378.62 : 137,091.51 = 28,197.36 : x
  2. Step 2: Convert to fraction form
    91,378.62/137,091.51 = 28,197.36/x
  3. Step 3: Cross multiply
    91,378.62x = 137,091.51 × 28,197.36
  4. Step 4: Simplify right side
    91,378.62x = 3,865,618,660.41
  5. Step 5: Solve for x
    x = 3,865,618,660.41/91,378.62
  6. Step 6: Final answer
    x = 42,303.32

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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.