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Finding the Fourth Proportional to 73,188.80, 109,783.20 and 49,860.80

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Solution

The fourth proportional to 73,188.80, 109,783.20 and 49,860.80 is: 74,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.80 : 109,783.20 = 49,860.80 : x
  2. Step 2: Convert to fraction form
    73,188.80/109,783.20 = 49,860.80/x
  3. Step 3: Cross multiply
    73,188.80x = 109,783.20 × 49,860.80
  4. Step 4: Simplify right side
    73,188.80x = 5,473,878,178.56
  5. Step 5: Solve for x
    x = 5,473,878,178.56/73,188.80
  6. Step 6: Final answer
    x = 74,791.20

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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.