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Finding the Fourth Proportional to 45,352.17, 67,915.11 and 28,661.85

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Solution

The fourth proportional to 45,352.17, 67,915.11 and 28,661.85 is: 42,921.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,352.17 : 67,915.11 = 28,661.85 : x
  2. Step 2: Convert to fraction form
    45,352.17/67,915.11 = 28,661.85/x
  3. Step 3: Cross multiply
    45,352.17x = 67,915.11 × 28,661.85
  4. Step 4: Simplify right side
    45,352.17x = 1,946,572,695.55
  5. Step 5: Solve for x
    x = 1,946,572,695.55/45,352.17
  6. Step 6: Final answer
    x = 42,921.27

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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.