Home / 91,878.20-137,784.90-41,982.20

Finding the Fourth Proportional to 91,878.20, 137,784.90 and 41,982.20

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Solution

The fourth proportional to 91,878.20, 137,784.90 and 41,982.20 is: 62,958.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,878.20 : 137,784.90 = 41,982.20 : x
  2. Step 2: Convert to fraction form
    91,878.20/137,784.90 = 41,982.20/x
  3. Step 3: Cross multiply
    91,878.20x = 137,784.90 × 41,982.20
  4. Step 4: Simplify right side
    91,878.20x = 5,784,513,228.78
  5. Step 5: Solve for x
    x = 5,784,513,228.78/91,878.20
  6. Step 6: Final answer
    x = 62,958.50

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1.5x scale

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.