Home / 57,020.73-78,686.63-31,179.89

Finding the Fourth Proportional to 57,020.73, 78,686.63 and 31,179.89

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Solution

The fourth proportional to 57,020.73, 78,686.63 and 31,179.89 is: 43,027.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,020.73 : 78,686.63 = 31,179.89 : x
  2. Step 2: Convert to fraction form
    57,020.73/78,686.63 = 31,179.89/x
  3. Step 3: Cross multiply
    57,020.73x = 78,686.63 × 31,179.89
  4. Step 4: Simplify right side
    57,020.73x = 2,453,440,349.10
  5. Step 5: Solve for x
    x = 2,453,440,349.10/57,020.73
  6. Step 6: Final answer
    x = 43,027.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.