Home / 76,776.42-114,564.05-68,797.63

Finding the Fourth Proportional to 76,776.42, 114,564.05 and 68,797.63

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Solution

The fourth proportional to 76,776.42, 114,564.05 and 68,797.63 is: 102,658.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,776.42 : 114,564.05 = 68,797.63 : x
  2. Step 2: Convert to fraction form
    76,776.42/114,564.05 = 68,797.63/x
  3. Step 3: Cross multiply
    76,776.42x = 114,564.05 × 68,797.63
  4. Step 4: Simplify right side
    76,776.42x = 7,881,735,123.20
  5. Step 5: Solve for x
    x = 7,881,735,123.20/76,776.42
  6. Step 6: Final answer
    x = 102,658.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.