Home / 80,977.64-121,578.06-55,955.72

Finding the Fourth Proportional to 80,977.64, 121,578.06 and 55,955.72

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Solution

The fourth proportional to 80,977.64, 121,578.06 and 55,955.72 is: 84,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,977.64 : 121,578.06 = 55,955.72 : x
  2. Step 2: Convert to fraction form
    80,977.64/121,578.06 = 55,955.72/x
  3. Step 3: Cross multiply
    80,977.64x = 121,578.06 × 55,955.72
  4. Step 4: Simplify right side
    80,977.64x = 6,802,987,883.50
  5. Step 5: Solve for x
    x = 6,802,987,883.50/80,977.64
  6. Step 6: Final answer
    x = 84,010.70

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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.