Home / 57,045.40-78,725.42-31,551.66

Finding the Fourth Proportional to 57,045.40, 78,725.42 and 31,551.66

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Solution

The fourth proportional to 57,045.40, 78,725.42 and 31,551.66 is: 43,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,045.40 : 78,725.42 = 31,551.66 : x
  2. Step 2: Convert to fraction form
    57,045.40/78,725.42 = 31,551.66/x
  3. Step 3: Cross multiply
    57,045.40x = 78,725.42 × 31,551.66
  4. Step 4: Simplify right side
    57,045.40x = 2,483,917,645.76
  5. Step 5: Solve for x
    x = 2,483,917,645.76/57,045.40
  6. Step 6: Final answer
    x = 43,542.82

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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.