Home / 69,531.05-103,402.02-67,316.69

Finding the Fourth Proportional to 69,531.05, 103,402.02 and 67,316.69

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Solution

The fourth proportional to 69,531.05, 103,402.02 and 67,316.69 is: 100,108.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,531.05 : 103,402.02 = 67,316.69 : x
  2. Step 2: Convert to fraction form
    69,531.05/103,402.02 = 67,316.69/x
  3. Step 3: Cross multiply
    69,531.05x = 103,402.02 × 67,316.69
  4. Step 4: Simplify right side
    69,531.05x = 6,960,681,208.70
  5. Step 5: Solve for x
    x = 6,960,681,208.70/69,531.05
  6. Step 6: Final answer
    x = 100,108.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.