Home / 81,977.02-113,129.94-49,711.48

Finding the Fourth Proportional to 81,977.02, 113,129.94 and 49,711.48

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Solution

The fourth proportional to 81,977.02, 113,129.94 and 49,711.48 is: 68,602.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,977.02 : 113,129.94 = 49,711.48 : x
  2. Step 2: Convert to fraction form
    81,977.02/113,129.94 = 49,711.48/x
  3. Step 3: Cross multiply
    81,977.02x = 113,129.94 × 49,711.48
  4. Step 4: Simplify right side
    81,977.02x = 5,623,856,749.71
  5. Step 5: Solve for x
    x = 5,623,856,749.71/81,977.02
  6. Step 6: Final answer
    x = 68,602.84

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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.