Home / 89,643.06-123,710.37-49,359.78

Finding the Fourth Proportional to 89,643.06, 123,710.37 and 49,359.78

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Solution

The fourth proportional to 89,643.06, 123,710.37 and 49,359.78 is: 68,118.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,643.06 : 123,710.37 = 49,359.78 : x
  2. Step 2: Convert to fraction form
    89,643.06/123,710.37 = 49,359.78/x
  3. Step 3: Cross multiply
    89,643.06x = 123,710.37 × 49,359.78
  4. Step 4: Simplify right side
    89,643.06x = 6,106,316,646.92
  5. Step 5: Solve for x
    x = 6,106,316,646.92/89,643.06
  6. Step 6: Final answer
    x = 68,118.12

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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.