Home / 52,913.88-79,356.96-20,890.80

Finding the Fourth Proportional to 52,913.88, 79,356.96 and 20,890.80

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Solution

The fourth proportional to 52,913.88, 79,356.96 and 20,890.80 is: 31,330.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,913.88 : 79,356.96 = 20,890.80 : x
  2. Step 2: Convert to fraction form
    52,913.88/79,356.96 = 20,890.80/x
  3. Step 3: Cross multiply
    52,913.88x = 79,356.96 × 20,890.80
  4. Step 4: Simplify right side
    52,913.88x = 1,657,830,379.97
  5. Step 5: Solve for x
    x = 1,657,830,379.97/52,913.88
  6. Step 6: Final answer
    x = 31,330.73

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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.