Home / 76,822.40-115,054.56-74,161.76

Finding the Fourth Proportional to 76,822.40, 115,054.56 and 74,161.76

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Solution

The fourth proportional to 76,822.40, 115,054.56 and 74,161.76 is: 111,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,822.40 : 115,054.56 = 74,161.76 : x
  2. Step 2: Convert to fraction form
    76,822.40/115,054.56 = 74,161.76/x
  3. Step 3: Cross multiply
    76,822.40x = 115,054.56 × 74,161.76
  4. Step 4: Simplify right side
    76,822.40x = 8,532,648,665.63
  5. Step 5: Solve for x
    x = 8,532,648,665.63/76,822.40
  6. Step 6: Final answer
    x = 111,069.80

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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.