Home / 76,962.88-106,146-64,651.36

Finding the Fourth Proportional to 76,962.88, 106,146 and 64,651.36

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Solution

The fourth proportional to 76,962.88, 106,146 and 64,651.36 is: 89,166.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,962.88 : 106,146 = 64,651.36 : x
  2. Step 2: Convert to fraction form
    76,962.88/106,146 = 64,651.36/x
  3. Step 3: Cross multiply
    76,962.88x = 106,146 × 64,651.36
  4. Step 4: Simplify right side
    76,962.88x = 6,862,483,258.56
  5. Step 5: Solve for x
    x = 6,862,483,258.56/76,962.88
  6. Step 6: Final answer
    x = 89,166.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.