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Finding the Fourth Proportional to 71,302.60, 107,030.70 and 40,198.60

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Solution

The fourth proportional to 71,302.60, 107,030.70 and 40,198.60 is: 60,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,302.60 : 107,030.70 = 40,198.60 : x
  2. Step 2: Convert to fraction form
    71,302.60/107,030.70 = 40,198.60/x
  3. Step 3: Cross multiply
    71,302.60x = 107,030.70 × 40,198.60
  4. Step 4: Simplify right side
    71,302.60x = 4,302,484,297.02
  5. Step 5: Solve for x
    x = 4,302,484,297.02/71,302.60
  6. Step 6: Final answer
    x = 60,341.20

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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.