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Finding the Fourth Proportional to 71,570.60, 107,355.90 and 69,930.35

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Solution

The fourth proportional to 71,570.60, 107,355.90 and 69,930.35 is: 104,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.60 : 107,355.90 = 69,930.35 : x
  2. Step 2: Convert to fraction form
    71,570.60/107,355.90 = 69,930.35/x
  3. Step 3: Cross multiply
    71,570.60x = 107,355.90 × 69,930.35
  4. Step 4: Simplify right side
    71,570.60x = 7,507,435,661.57
  5. Step 5: Solve for x
    x = 7,507,435,661.57/71,570.60
  6. Step 6: Final answer
    x = 104,895.53

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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.