Home / 56,912.70-78,539.09-31,419.08

Finding the Fourth Proportional to 56,912.70, 78,539.09 and 31,419.08

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Solution

The fourth proportional to 56,912.70, 78,539.09 and 31,419.08 is: 43,358.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,912.70 : 78,539.09 = 31,419.08 : x
  2. Step 2: Convert to fraction form
    56,912.70/78,539.09 = 31,419.08/x
  3. Step 3: Cross multiply
    56,912.70x = 78,539.09 × 31,419.08
  4. Step 4: Simplify right side
    56,912.70x = 2,467,625,951.84
  5. Step 5: Solve for x
    x = 2,467,625,951.84/56,912.70
  6. Step 6: Final answer
    x = 43,358.09

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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.