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Finding the Fourth Proportional to 71,346.85, 107,020.27 and 18,756.25

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Solution

The fourth proportional to 71,346.85, 107,020.27 and 18,756.25 is: 28,134.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,346.85 : 107,020.27 = 18,756.25 : x
  2. Step 2: Convert to fraction form
    71,346.85/107,020.27 = 18,756.25/x
  3. Step 3: Cross multiply
    71,346.85x = 107,020.27 × 18,756.25
  4. Step 4: Simplify right side
    71,346.85x = 2,007,298,939.19
  5. Step 5: Solve for x
    x = 2,007,298,939.19/71,346.85
  6. Step 6: Final answer
    x = 28,134.37

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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.