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Finding the Fourth Proportional to 66,342.15, 99,402.30 and 28,845.99

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Solution

The fourth proportional to 66,342.15, 99,402.30 and 28,845.99 is: 43,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,342.15 : 99,402.30 = 28,845.99 : x
  2. Step 2: Convert to fraction form
    66,342.15/99,402.30 = 28,845.99/x
  3. Step 3: Cross multiply
    66,342.15x = 99,402.30 × 28,845.99
  4. Step 4: Simplify right side
    66,342.15x = 2,867,357,751.78
  5. Step 5: Solve for x
    x = 2,867,357,751.78/66,342.15
  6. Step 6: Final answer
    x = 43,220.75

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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.