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Finding the Fourth Proportional to 60,079.86, 90,076.05 and 28,878.66

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Solution

The fourth proportional to 60,079.86, 90,076.05 and 28,878.66 is: 43,296.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,079.86 : 90,076.05 = 28,878.66 : x
  2. Step 2: Convert to fraction form
    60,079.86/90,076.05 = 28,878.66/x
  3. Step 3: Cross multiply
    60,079.86x = 90,076.05 × 28,878.66
  4. Step 4: Simplify right side
    60,079.86x = 2,601,275,622.09
  5. Step 5: Solve for x
    x = 2,601,275,622.09/60,079.86
  6. Step 6: Final answer
    x = 43,296.97

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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.