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Finding the Fourth Proportional to 28,079, 42,129.46 and 10,550.22

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Solution

The fourth proportional to 28,079, 42,129.46 and 10,550.22 is: 15,829.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079 : 42,129.46 = 10,550.22 : x
  2. Step 2: Convert to fraction form
    28,079/42,129.46 = 10,550.22/x
  3. Step 3: Cross multiply
    28,079x = 42,129.46 × 10,550.22
  4. Step 4: Simplify right side
    28,079x = 444,475,071.48
  5. Step 5: Solve for x
    x = 444,475,071.48/28,079
  6. Step 6: Final answer
    x = 15,829.45

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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.