Home / 51,934.80-77,909.88-20,769.36

Finding the Fourth Proportional to 51,934.80, 77,909.88 and 20,769.36

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Solution

The fourth proportional to 51,934.80, 77,909.88 and 20,769.36 is: 31,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,934.80 : 77,909.88 = 20,769.36 : x
  2. Step 2: Convert to fraction form
    51,934.80/77,909.88 = 20,769.36/x
  3. Step 3: Cross multiply
    51,934.80x = 77,909.88 × 20,769.36
  4. Step 4: Simplify right side
    51,934.80x = 1,618,138,345.28
  5. Step 5: Solve for x
    x = 1,618,138,345.28/51,934.80
  6. Step 6: Final answer
    x = 31,157.11

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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.