Home / 56,387.85-77,815.53-31,858.77

Finding the Fourth Proportional to 56,387.85, 77,815.53 and 31,858.77

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Solution

The fourth proportional to 56,387.85, 77,815.53 and 31,858.77 is: 43,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,387.85 : 77,815.53 = 31,858.77 : x
  2. Step 2: Convert to fraction form
    56,387.85/77,815.53 = 31,858.77/x
  3. Step 3: Cross multiply
    56,387.85x = 77,815.53 × 31,858.77
  4. Step 4: Simplify right side
    56,387.85x = 2,479,107,072.70
  5. Step 5: Solve for x
    x = 2,479,107,072.70/56,387.85
  6. Step 6: Final answer
    x = 43,965.27

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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.