Home / 57,111.72-85,673.28-19,666.82

Finding the Fourth Proportional to 57,111.72, 85,673.28 and 19,666.82

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Solution

The fourth proportional to 57,111.72, 85,673.28 and 19,666.82 is: 29,502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,111.72 : 85,673.28 = 19,666.82 : x
  2. Step 2: Convert to fraction form
    57,111.72/85,673.28 = 19,666.82/x
  3. Step 3: Cross multiply
    57,111.72x = 85,673.28 × 19,666.82
  4. Step 4: Simplify right side
    57,111.72x = 1,684,920,976.57
  5. Step 5: Solve for x
    x = 1,684,920,976.57/57,111.72
  6. Step 6: Final answer
    x = 29,502.19

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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.