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Finding the Fourth Proportional to 72,423.70, 108,599.10 and 42,850.60

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Solution

The fourth proportional to 72,423.70, 108,599.10 and 42,850.60 is: 64,254.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,423.70 : 108,599.10 = 42,850.60 : x
  2. Step 2: Convert to fraction form
    72,423.70/108,599.10 = 42,850.60/x
  3. Step 3: Cross multiply
    72,423.70x = 108,599.10 × 42,850.60
  4. Step 4: Simplify right side
    72,423.70x = 4,653,536,594.46
  5. Step 5: Solve for x
    x = 4,653,536,594.46/72,423.70
  6. Step 6: Final answer
    x = 64,254.33

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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.