Home / 89,685.81-123,765.06-49,399.65

Finding the Fourth Proportional to 89,685.81, 123,765.06 and 49,399.65

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Solution

The fourth proportional to 89,685.81, 123,765.06 and 49,399.65 is: 68,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,685.81 : 123,765.06 = 49,399.65 : x
  2. Step 2: Convert to fraction form
    89,685.81/123,765.06 = 49,399.65/x
  3. Step 3: Cross multiply
    89,685.81x = 123,765.06 × 49,399.65
  4. Step 4: Simplify right side
    89,685.81x = 6,113,950,646.23
  5. Step 5: Solve for x
    x = 6,113,950,646.23/89,685.81
  6. Step 6: Final answer
    x = 68,170.77

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1.5x scale

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.