Home / 51,886.61-77,782.05-20,318.17

Finding the Fourth Proportional to 51,886.61, 77,782.05 and 20,318.17

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Solution

The fourth proportional to 51,886.61, 77,782.05 and 20,318.17 is: 30,458.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,886.61 : 77,782.05 = 20,318.17 : x
  2. Step 2: Convert to fraction form
    51,886.61/77,782.05 = 20,318.17/x
  3. Step 3: Cross multiply
    51,886.61x = 77,782.05 × 20,318.17
  4. Step 4: Simplify right side
    51,886.61x = 1,580,388,914.85
  5. Step 5: Solve for x
    x = 1,580,388,914.85/51,886.61
  6. Step 6: Final answer
    x = 30,458.51

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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.