Home / 57,314.80-85,929.18-19,861.72

Finding the Fourth Proportional to 57,314.80, 85,929.18 and 19,861.72

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Solution

The fourth proportional to 57,314.80, 85,929.18 and 19,861.72 is: 29,777.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,314.80 : 85,929.18 = 19,861.72 : x
  2. Step 2: Convert to fraction form
    57,314.80/85,929.18 = 19,861.72/x
  3. Step 3: Cross multiply
    57,314.80x = 85,929.18 × 19,861.72
  4. Step 4: Simplify right side
    57,314.80x = 1,706,701,312.99
  5. Step 5: Solve for x
    x = 1,706,701,312.99/57,314.80
  6. Step 6: Final answer
    x = 29,777.67

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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.