Home / 57,114-85,676.72-19,669.20

Finding the Fourth Proportional to 57,114, 85,676.72 and 19,669.20

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Solution

The fourth proportional to 57,114, 85,676.72 and 19,669.20 is: 29,505.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,114 : 85,676.72 = 19,669.20 : x
  2. Step 2: Convert to fraction form
    57,114/85,676.72 = 19,669.20/x
  3. Step 3: Cross multiply
    57,114x = 85,676.72 × 19,669.20
  4. Step 4: Simplify right side
    57,114x = 1,685,192,541.02
  5. Step 5: Solve for x
    x = 1,685,192,541.02/57,114
  6. Step 6: Final answer
    x = 29,505.77

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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.