Home / 76,823.40-115,056.06-74,162.76

Finding the Fourth Proportional to 76,823.40, 115,056.06 and 74,162.76

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Solution

The fourth proportional to 76,823.40, 115,056.06 and 74,162.76 is: 111,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,823.40 : 115,056.06 = 74,162.76 : x
  2. Step 2: Convert to fraction form
    76,823.40/115,056.06 = 74,162.76/x
  3. Step 3: Cross multiply
    76,823.40x = 115,056.06 × 74,162.76
  4. Step 4: Simplify right side
    76,823.40x = 8,532,874,964.33
  5. Step 5: Solve for x
    x = 8,532,874,964.33/76,823.40
  6. Step 6: Final answer
    x = 111,071.30

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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.