Home / 80,711.64-111,381.50-44,415.28

Finding the Fourth Proportional to 80,711.64, 111,381.50 and 44,415.28

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Solution

The fourth proportional to 80,711.64, 111,381.50 and 44,415.28 is: 61,292.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,711.64 : 111,381.50 = 44,415.28 : x
  2. Step 2: Convert to fraction form
    80,711.64/111,381.50 = 44,415.28/x
  3. Step 3: Cross multiply
    80,711.64x = 111,381.50 × 44,415.28
  4. Step 4: Simplify right side
    80,711.64x = 4,947,040,509.32
  5. Step 5: Solve for x
    x = 4,947,040,509.32/80,711.64
  6. Step 6: Final answer
    x = 61,292.78

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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.