Home / 80,808.86-121,172.73-47,085.78

Finding the Fourth Proportional to 80,808.86, 121,172.73 and 47,085.78

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Solution

The fourth proportional to 80,808.86, 121,172.73 and 47,085.78 is: 70,605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,808.86 : 121,172.73 = 47,085.78 : x
  2. Step 2: Convert to fraction form
    80,808.86/121,172.73 = 47,085.78/x
  3. Step 3: Cross multiply
    80,808.86x = 121,172.73 × 47,085.78
  4. Step 4: Simplify right side
    80,808.86x = 5,705,512,506.78
  5. Step 5: Solve for x
    x = 5,705,512,506.78/80,808.86
  6. Step 6: Final answer
    x = 70,605.04

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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.