Home / 56,715.24-78,265.70-31,564.20

Finding the Fourth Proportional to 56,715.24, 78,265.70 and 31,564.20

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Solution

The fourth proportional to 56,715.24, 78,265.70 and 31,564.20 is: 43,557.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,715.24 : 78,265.70 = 31,564.20 : x
  2. Step 2: Convert to fraction form
    56,715.24/78,265.70 = 31,564.20/x
  3. Step 3: Cross multiply
    56,715.24x = 78,265.70 × 31,564.20
  4. Step 4: Simplify right side
    56,715.24x = 2,470,394,207.94
  5. Step 5: Solve for x
    x = 2,470,394,207.94/56,715.24
  6. Step 6: Final answer
    x = 43,557.86

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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.