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Finding the Fourth Proportional to 71,860.68, 108,034.32 and 57,918.60

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Solution

The fourth proportional to 71,860.68, 108,034.32 and 57,918.60 is: 87,074.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,860.68 : 108,034.32 = 57,918.60 : x
  2. Step 2: Convert to fraction form
    71,860.68/108,034.32 = 57,918.60/x
  3. Step 3: Cross multiply
    71,860.68x = 108,034.32 × 57,918.60
  4. Step 4: Simplify right side
    71,860.68x = 6,257,196,566.35
  5. Step 5: Solve for x
    x = 6,257,196,566.35/71,860.68
  6. Step 6: Final answer
    x = 87,074.00

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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.