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Finding the Fourth Proportional to 60,212.88, 90,350.16 and 28,658.64

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Solution

The fourth proportional to 60,212.88, 90,350.16 and 28,658.64 is: 43,002.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,212.88 : 90,350.16 = 28,658.64 : x
  2. Step 2: Convert to fraction form
    60,212.88/90,350.16 = 28,658.64/x
  3. Step 3: Cross multiply
    60,212.88x = 90,350.16 × 28,658.64
  4. Step 4: Simplify right side
    60,212.88x = 2,589,312,709.38
  5. Step 5: Solve for x
    x = 2,589,312,709.38/60,212.88
  6. Step 6: Final answer
    x = 43,002.64

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1.5x scale

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.