Home / 101,935.60-140,673-56,617.78

Finding the Fourth Proportional to 101,935.60, 140,673 and 56,617.78

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Solution

The fourth proportional to 101,935.60, 140,673 and 56,617.78 is: 78,133.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,935.60 : 140,673 = 56,617.78 : x
  2. Step 2: Convert to fraction form
    101,935.60/140,673 = 56,617.78/x
  3. Step 3: Cross multiply
    101,935.60x = 140,673 × 56,617.78
  4. Step 4: Simplify right side
    101,935.60x = 7,964,592,965.94
  5. Step 5: Solve for x
    x = 7,964,592,965.94/101,935.60
  6. Step 6: Final answer
    x = 78,133.58

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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.