Home / 80,775.40-121,235.10-47,453.80

Finding the Fourth Proportional to 80,775.40, 121,235.10 and 47,453.80

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Solution

The fourth proportional to 80,775.40, 121,235.10 and 47,453.80 is: 71,223.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,775.40 : 121,235.10 = 47,453.80 : x
  2. Step 2: Convert to fraction form
    80,775.40/121,235.10 = 47,453.80/x
  3. Step 3: Cross multiply
    80,775.40x = 121,235.10 × 47,453.80
  4. Step 4: Simplify right side
    80,775.40x = 5,753,066,188.38
  5. Step 5: Solve for x
    x = 5,753,066,188.38/80,775.40
  6. Step 6: Final answer
    x = 71,223.00

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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.