Home / 56,072.41-77,379.91-30,921.91

Finding the Fourth Proportional to 56,072.41, 77,379.91 and 30,921.91

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Solution

The fourth proportional to 56,072.41, 77,379.91 and 30,921.91 is: 42,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,072.41 : 77,379.91 = 30,921.91 : x
  2. Step 2: Convert to fraction form
    56,072.41/77,379.91 = 30,921.91/x
  3. Step 3: Cross multiply
    56,072.41x = 77,379.91 × 30,921.91
  4. Step 4: Simplify right side
    56,072.41x = 2,392,734,342.07
  5. Step 5: Solve for x
    x = 2,392,734,342.07/56,072.41
  6. Step 6: Final answer
    x = 42,672.22

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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.