Home / 80,911.49-121,408.16-54,560.84

Finding the Fourth Proportional to 80,911.49, 121,408.16 and 54,560.84

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Solution

The fourth proportional to 80,911.49, 121,408.16 and 54,560.84 is: 81,868.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,911.49 : 121,408.16 = 54,560.84 : x
  2. Step 2: Convert to fraction form
    80,911.49/121,408.16 = 54,560.84/x
  3. Step 3: Cross multiply
    80,911.49x = 121,408.16 × 54,560.84
  4. Step 4: Simplify right side
    80,911.49x = 6,624,130,312.61
  5. Step 5: Solve for x
    x = 6,624,130,312.61/80,911.49
  6. Step 6: Final answer
    x = 81,868.85

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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.