Home / 69,064.89-103,587.07-19,139.78

Finding the Fourth Proportional to 69,064.89, 103,587.07 and 19,139.78

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Solution

The fourth proportional to 69,064.89, 103,587.07 and 19,139.78 is: 28,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,064.89 : 103,587.07 = 19,139.78 : x
  2. Step 2: Convert to fraction form
    69,064.89/103,587.07 = 19,139.78/x
  3. Step 3: Cross multiply
    69,064.89x = 103,587.07 × 19,139.78
  4. Step 4: Simplify right side
    69,064.89x = 1,982,634,037.46
  5. Step 5: Solve for x
    x = 1,982,634,037.46/69,064.89
  6. Step 6: Final answer
    x = 28,706.83

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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.