Home / 90,721.44-135,964.80-48,556.80

Finding the Fourth Proportional to 90,721.44, 135,964.80 and 48,556.80

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Solution

The fourth proportional to 90,721.44, 135,964.80 and 48,556.80 is: 72,772.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,721.44 : 135,964.80 = 48,556.80 : x
  2. Step 2: Convert to fraction form
    90,721.44/135,964.80 = 48,556.80/x
  3. Step 3: Cross multiply
    90,721.44x = 135,964.80 × 48,556.80
  4. Step 4: Simplify right side
    90,721.44x = 6,602,015,600.64
  5. Step 5: Solve for x
    x = 6,602,015,600.64/90,721.44
  6. Step 6: Final answer
    x = 72,772.39

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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.