Home / 86,137.93-129,216.62-39,378.25

Finding the Fourth Proportional to 86,137.93, 129,216.62 and 39,378.25

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Solution

The fourth proportional to 86,137.93, 129,216.62 and 39,378.25 is: 59,071.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.93 : 129,216.62 = 39,378.25 : x
  2. Step 2: Convert to fraction form
    86,137.93/129,216.62 = 39,378.25/x
  3. Step 3: Cross multiply
    86,137.93x = 129,216.62 × 39,378.25
  4. Step 4: Simplify right side
    86,137.93x = 5,088,324,366.52
  5. Step 5: Solve for x
    x = 5,088,324,366.52/86,137.93
  6. Step 6: Final answer
    x = 59,071.82

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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.