Home / 76,839.06-115,182.54-36,811.74

Finding the Fourth Proportional to 76,839.06, 115,182.54 and 36,811.74

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Solution

The fourth proportional to 76,839.06, 115,182.54 and 36,811.74 is: 55,181.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,839.06 : 115,182.54 = 36,811.74 : x
  2. Step 2: Convert to fraction form
    76,839.06/115,182.54 = 36,811.74/x
  3. Step 3: Cross multiply
    76,839.06x = 115,182.54 × 36,811.74
  4. Step 4: Simplify right side
    76,839.06x = 4,240,069,715.02
  5. Step 5: Solve for x
    x = 4,240,069,715.02/76,839.06
  6. Step 6: Final answer
    x = 55,181.18

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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.