Home / 86,339.39-129,269.94-44,128.56

Finding the Fourth Proportional to 86,339.39, 129,269.94 and 44,128.56

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Solution

The fourth proportional to 86,339.39, 129,269.94 and 44,128.56 is: 66,070.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,339.39 : 129,269.94 = 44,128.56 : x
  2. Step 2: Convert to fraction form
    86,339.39/129,269.94 = 44,128.56/x
  3. Step 3: Cross multiply
    86,339.39x = 129,269.94 × 44,128.56
  4. Step 4: Simplify right side
    86,339.39x = 5,704,496,870.99
  5. Step 5: Solve for x
    x = 5,704,496,870.99/86,339.39
  6. Step 6: Final answer
    x = 66,070.62

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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.