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Finding the Fourth Proportional to 71,316.60, 107,051.70 and 40,212.60

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Solution

The fourth proportional to 71,316.60, 107,051.70 and 40,212.60 is: 60,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,316.60 : 107,051.70 = 40,212.60 : x
  2. Step 2: Convert to fraction form
    71,316.60/107,051.70 = 40,212.60/x
  3. Step 3: Cross multiply
    71,316.60x = 107,051.70 × 40,212.60
  4. Step 4: Simplify right side
    71,316.60x = 4,304,827,191.42
  5. Step 5: Solve for x
    x = 4,304,827,191.42/71,316.60
  6. Step 6: Final answer
    x = 60,362.20

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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.