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Finding the Fourth Proportional to 45,071.88, 67,469.42 and 28,353.63

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Solution

The fourth proportional to 45,071.88, 67,469.42 and 28,353.63 is: 42,443.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,071.88 : 67,469.42 = 28,353.63 : x
  2. Step 2: Convert to fraction form
    45,071.88/67,469.42 = 28,353.63/x
  3. Step 3: Cross multiply
    45,071.88x = 67,469.42 × 28,353.63
  4. Step 4: Simplify right side
    45,071.88x = 1,913,002,829.23
  5. Step 5: Solve for x
    x = 1,913,002,829.23/45,071.88
  6. Step 6: Final answer
    x = 42,443.38

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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.