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Finding the Fourth Proportional to 73,001.69, 109,531.16 and 28,620.85

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Solution

The fourth proportional to 73,001.69, 109,531.16 and 28,620.85 is: 42,942.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,001.69 : 109,531.16 = 28,620.85 : x
  2. Step 2: Convert to fraction form
    73,001.69/109,531.16 = 28,620.85/x
  3. Step 3: Cross multiply
    73,001.69x = 109,531.16 × 28,620.85
  4. Step 4: Simplify right side
    73,001.69x = 3,134,874,900.69
  5. Step 5: Solve for x
    x = 3,134,874,900.69/73,001.69
  6. Step 6: Final answer
    x = 42,942.50

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1.5x scale

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.