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Finding the Fourth Proportional to 94,720, 142,107.84 and 28,160.64

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Solution

The fourth proportional to 94,720, 142,107.84 and 28,160.64 is: 42,249.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,720 : 142,107.84 = 28,160.64 : x
  2. Step 2: Convert to fraction form
    94,720/142,107.84 = 28,160.64/x
  3. Step 3: Cross multiply
    94,720x = 142,107.84 × 28,160.64
  4. Step 4: Simplify right side
    94,720x = 4,001,847,723.42
  5. Step 5: Solve for x
    x = 4,001,847,723.42/94,720
  6. Step 6: Final answer
    x = 42,249.24

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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.