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Finding the Fourth Proportional to 57,459.48, 86,189.22 and 18,019.78

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Solution

The fourth proportional to 57,459.48, 86,189.22 and 18,019.78 is: 27,029.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,459.48 : 86,189.22 = 18,019.78 : x
  2. Step 2: Convert to fraction form
    57,459.48/86,189.22 = 18,019.78/x
  3. Step 3: Cross multiply
    57,459.48x = 86,189.22 × 18,019.78
  4. Step 4: Simplify right side
    57,459.48x = 1,553,110,782.77
  5. Step 5: Solve for x
    x = 1,553,110,782.77/57,459.48
  6. Step 6: Final answer
    x = 27,029.67

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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.