Home / 87,211.40-130,804.82-28,039.56

Finding the Fourth Proportional to 87,211.40, 130,804.82 and 28,039.56

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Solution

The fourth proportional to 87,211.40, 130,804.82 and 28,039.56 is: 42,055.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,211.40 : 130,804.82 = 28,039.56 : x
  2. Step 2: Convert to fraction form
    87,211.40/130,804.82 = 28,039.56/x
  3. Step 3: Cross multiply
    87,211.40x = 130,804.82 × 28,039.56
  4. Step 4: Simplify right side
    87,211.40x = 3,667,709,598.68
  5. Step 5: Solve for x
    x = 3,667,709,598.68/87,211.40
  6. Step 6: Final answer
    x = 42,055.39

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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.