Home / 57,202.61-78,939.70-31,709.36

Finding the Fourth Proportional to 57,202.61, 78,939.70 and 31,709.36

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Solution

The fourth proportional to 57,202.61, 78,939.70 and 31,709.36 is: 43,758.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,202.61 : 78,939.70 = 31,709.36 : x
  2. Step 2: Convert to fraction form
    57,202.61/78,939.70 = 31,709.36/x
  3. Step 3: Cross multiply
    57,202.61x = 78,939.70 × 31,709.36
  4. Step 4: Simplify right side
    57,202.61x = 2,503,127,483.67
  5. Step 5: Solve for x
    x = 2,503,127,483.67/57,202.61
  6. Step 6: Final answer
    x = 43,758.98

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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.