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Finding the Fourth Proportional to 57,590.96, 86,239.56 and 45,921.20

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Solution

The fourth proportional to 57,590.96, 86,239.56 and 45,921.20 is: 68,764.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,590.96 : 86,239.56 = 45,921.20 : x
  2. Step 2: Convert to fraction form
    57,590.96/86,239.56 = 45,921.20/x
  3. Step 3: Cross multiply
    57,590.96x = 86,239.56 × 45,921.20
  4. Step 4: Simplify right side
    57,590.96x = 3,960,224,082.67
  5. Step 5: Solve for x
    x = 3,960,224,082.67/57,590.96
  6. Step 6: Final answer
    x = 68,764.68

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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.