Home / 57,020.48-78,686.29-31,179.64

Finding the Fourth Proportional to 57,020.48, 78,686.29 and 31,179.64

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Solution

The fourth proportional to 57,020.48, 78,686.29 and 31,179.64 is: 43,026.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,020.48 : 78,686.29 = 31,179.64 : x
  2. Step 2: Convert to fraction form
    57,020.48/78,686.29 = 31,179.64/x
  3. Step 3: Cross multiply
    57,020.48x = 78,686.29 × 31,179.64
  4. Step 4: Simplify right side
    57,020.48x = 2,453,409,920.47
  5. Step 5: Solve for x
    x = 2,453,409,920.47/57,020.48
  6. Step 6: Final answer
    x = 43,026.82

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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.