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Finding the Fourth Proportional to 79,893.85, 119,831.92 and 28,600.47

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Solution

The fourth proportional to 79,893.85, 119,831.92 and 28,600.47 is: 42,897.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,893.85 : 119,831.92 = 28,600.47 : x
  2. Step 2: Convert to fraction form
    79,893.85/119,831.92 = 28,600.47/x
  3. Step 3: Cross multiply
    79,893.85x = 119,831.92 × 28,600.47
  4. Step 4: Simplify right side
    79,893.85x = 3,427,249,233.00
  5. Step 5: Solve for x
    x = 3,427,249,233.00/79,893.85
  6. Step 6: Final answer
    x = 42,897.54

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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.