Home / 71,984.75-99,339.05-40,155.67

Finding the Fourth Proportional to 71,984.75, 99,339.05 and 40,155.67

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Solution

The fourth proportional to 71,984.75, 99,339.05 and 40,155.67 is: 55,414.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,984.75 : 99,339.05 = 40,155.67 : x
  2. Step 2: Convert to fraction form
    71,984.75/99,339.05 = 40,155.67/x
  3. Step 3: Cross multiply
    71,984.75x = 99,339.05 × 40,155.67
  4. Step 4: Simplify right side
    71,984.75x = 3,989,025,412.44
  5. Step 5: Solve for x
    x = 3,989,025,412.44/71,984.75
  6. Step 6: Final answer
    x = 55,414.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.