Home / 57,613.50-86,430.96-20,172.78

Finding the Fourth Proportional to 57,613.50, 86,430.96 and 20,172.78

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Solution

The fourth proportional to 57,613.50, 86,430.96 and 20,172.78 is: 30,262.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,613.50 : 86,430.96 = 20,172.78 : x
  2. Step 2: Convert to fraction form
    57,613.50/86,430.96 = 20,172.78/x
  3. Step 3: Cross multiply
    57,613.50x = 86,430.96 × 20,172.78
  4. Step 4: Simplify right side
    57,613.50x = 1,743,552,741.27
  5. Step 5: Solve for x
    x = 1,743,552,741.27/57,613.50
  6. Step 6: Final answer
    x = 30,262.92

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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.