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Finding the Fourth Proportional to 86,777.30, 130,241.42 and 49,412.54

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Solution

The fourth proportional to 86,777.30, 130,241.42 and 49,412.54 is: 74,161.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,777.30 : 130,241.42 = 49,412.54 : x
  2. Step 2: Convert to fraction form
    86,777.30/130,241.42 = 49,412.54/x
  3. Step 3: Cross multiply
    86,777.30x = 130,241.42 × 49,412.54
  4. Step 4: Simplify right side
    86,777.30x = 6,435,559,375.41
  5. Step 5: Solve for x
    x = 6,435,559,375.41/86,777.30
  6. Step 6: Final answer
    x = 74,161.78

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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.