Home / 57,142.85-85,719.92-19,698.00

Finding the Fourth Proportional to 57,142.85, 85,719.92 and 19,698.00

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Solution

The fourth proportional to 57,142.85, 85,719.92 and 19,698.00 is: 29,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,142.85 : 85,719.92 = 19,698.00 : x
  2. Step 2: Convert to fraction form
    57,142.85/85,719.92 = 19,698.00/x
  3. Step 3: Cross multiply
    57,142.85x = 85,719.92 × 19,698.00
  4. Step 4: Simplify right side
    57,142.85x = 1,688,510,638.09
  5. Step 5: Solve for x
    x = 1,688,510,638.09/57,142.85
  6. Step 6: Final answer
    x = 29,548.94

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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.