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Finding the Fourth Proportional to 80,772.66, 111,559.59 and 53,868.41

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Solution

The fourth proportional to 80,772.66, 111,559.59 and 53,868.41 is: 74,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,772.66 : 111,559.59 = 53,868.41 : x
  2. Step 2: Convert to fraction form
    80,772.66/111,559.59 = 53,868.41/x
  3. Step 3: Cross multiply
    80,772.66x = 111,559.59 × 53,868.41
  4. Step 4: Simplify right side
    80,772.66x = 6,009,538,012.45
  5. Step 5: Solve for x
    x = 6,009,538,012.45/80,772.66
  6. Step 6: Final answer
    x = 74,400.64

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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.