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Finding the Fourth Proportional to 73,019.45, 109,482.08 and 28,650.69

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Solution

The fourth proportional to 73,019.45, 109,482.08 and 28,650.69 is: 42,957.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,019.45 : 109,482.08 = 28,650.69 : x
  2. Step 2: Convert to fraction form
    73,019.45/109,482.08 = 28,650.69/x
  3. Step 3: Cross multiply
    73,019.45x = 109,482.08 × 28,650.69
  4. Step 4: Simplify right side
    73,019.45x = 3,136,737,206.26
  5. Step 5: Solve for x
    x = 3,136,737,206.26/73,019.45
  6. Step 6: Final answer
    x = 42,957.56

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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.