Home / 91,981.80-137,946.78-39,448.44

Finding the Fourth Proportional to 91,981.80, 137,946.78 and 39,448.44

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Solution

The fourth proportional to 91,981.80, 137,946.78 and 39,448.44 is: 59,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.80 : 137,946.78 = 39,448.44 : x
  2. Step 2: Convert to fraction form
    91,981.80/137,946.78 = 39,448.44/x
  3. Step 3: Cross multiply
    91,981.80x = 137,946.78 × 39,448.44
  4. Step 4: Simplify right side
    91,981.80x = 5,441,785,274.02
  5. Step 5: Solve for x
    x = 5,441,785,274.02/91,981.80
  6. Step 6: Final answer
    x = 59,161.54

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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.