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Finding the Fourth Proportional to 71,389.36, 107,074.96 and 18,802.96

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Solution

The fourth proportional to 71,389.36, 107,074.96 and 18,802.96 is: 28,202.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,389.36 : 107,074.96 = 18,802.96 : x
  2. Step 2: Convert to fraction form
    71,389.36/107,074.96 = 18,802.96/x
  3. Step 3: Cross multiply
    71,389.36x = 107,074.96 × 18,802.96
  4. Step 4: Simplify right side
    71,389.36x = 2,013,326,189.88
  5. Step 5: Solve for x
    x = 2,013,326,189.88/71,389.36
  6. Step 6: Final answer
    x = 28,202.05

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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.