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Finding the Fourth Proportional to 43,613.92, 65,442.88 and 19,918.88

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Solution

The fourth proportional to 43,613.92, 65,442.88 and 19,918.88 is: 29,888.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,613.92 : 65,442.88 = 19,918.88 : x
  2. Step 2: Convert to fraction form
    43,613.92/65,442.88 = 19,918.88/x
  3. Step 3: Cross multiply
    43,613.92x = 65,442.88 × 19,918.88
  4. Step 4: Simplify right side
    43,613.92x = 1,303,548,873.57
  5. Step 5: Solve for x
    x = 1,303,548,873.57/43,613.92
  6. Step 6: Final answer
    x = 29,888.37

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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.