Home / 81,266.13-112,159.23-49,428.87

Finding the Fourth Proportional to 81,266.13, 112,159.23 and 49,428.87

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Solution

The fourth proportional to 81,266.13, 112,159.23 and 49,428.87 is: 68,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,266.13 : 112,159.23 = 49,428.87 : x
  2. Step 2: Convert to fraction form
    81,266.13/112,159.23 = 49,428.87/x
  3. Step 3: Cross multiply
    81,266.13x = 112,159.23 × 49,428.87
  4. Step 4: Simplify right side
    81,266.13x = 5,543,903,998.97
  5. Step 5: Solve for x
    x = 5,543,903,998.97/81,266.13
  6. Step 6: Final answer
    x = 68,219.12

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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.