Home / 69,087.13-103,505.55-31,678.49

Finding the Fourth Proportional to 69,087.13, 103,505.55 and 31,678.49

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Solution

The fourth proportional to 69,087.13, 103,505.55 and 31,678.49 is: 47,460.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,087.13 : 103,505.55 = 31,678.49 : x
  2. Step 2: Convert to fraction form
    69,087.13/103,505.55 = 31,678.49/x
  3. Step 3: Cross multiply
    69,087.13x = 103,505.55 × 31,678.49
  4. Step 4: Simplify right side
    69,087.13x = 3,278,899,670.59
  5. Step 5: Solve for x
    x = 3,278,899,670.59/69,087.13
  6. Step 6: Final answer
    x = 47,460.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.