Home / 78,528.84-117,793.26-31,814.52

Finding the Fourth Proportional to 78,528.84, 117,793.26 and 31,814.52

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Solution

The fourth proportional to 78,528.84, 117,793.26 and 31,814.52 is: 47,721.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,528.84 : 117,793.26 = 31,814.52 : x
  2. Step 2: Convert to fraction form
    78,528.84/117,793.26 = 31,814.52/x
  3. Step 3: Cross multiply
    78,528.84x = 117,793.26 × 31,814.52
  4. Step 4: Simplify right side
    78,528.84x = 3,747,536,026.14
  5. Step 5: Solve for x
    x = 3,747,536,026.14/78,528.84
  6. Step 6: Final answer
    x = 47,721.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.