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Finding the Fourth Proportional to 60,579.05, 90,809.51 and 28,980.86

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Solution

The fourth proportional to 60,579.05, 90,809.51 and 28,980.86 is: 43,443.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579.05 : 90,809.51 = 28,980.86 : x
  2. Step 2: Convert to fraction form
    60,579.05/90,809.51 = 28,980.86/x
  3. Step 3: Cross multiply
    60,579.05x = 90,809.51 × 28,980.86
  4. Step 4: Simplify right side
    60,579.05x = 2,631,737,600.58
  5. Step 5: Solve for x
    x = 2,631,737,600.58/60,579.05
  6. Step 6: Final answer
    x = 43,443.03

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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.