Home / 89,716.10-123,803.78-49,428.81

Finding the Fourth Proportional to 89,716.10, 123,803.78 and 49,428.81

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Solution

The fourth proportional to 89,716.10, 123,803.78 and 49,428.81 is: 68,209.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,716.10 : 123,803.78 = 49,428.81 : x
  2. Step 2: Convert to fraction form
    89,716.10/123,803.78 = 49,428.81/x
  3. Step 3: Cross multiply
    89,716.10x = 123,803.78 × 49,428.81
  4. Step 4: Simplify right side
    89,716.10x = 6,119,473,271.76
  5. Step 5: Solve for x
    x = 6,119,473,271.76/89,716.10
  6. Step 6: Final answer
    x = 68,209.31

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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.