Home / 56,919.74-78,548.82-31,426.16

Finding the Fourth Proportional to 56,919.74, 78,548.82 and 31,426.16

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Solution

The fourth proportional to 56,919.74, 78,548.82 and 31,426.16 is: 43,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,919.74 : 78,548.82 = 31,426.16 : x
  2. Step 2: Convert to fraction form
    56,919.74/78,548.82 = 31,426.16/x
  3. Step 3: Cross multiply
    56,919.74x = 78,548.82 × 31,426.16
  4. Step 4: Simplify right side
    56,919.74x = 2,468,487,785.13
  5. Step 5: Solve for x
    x = 2,468,487,785.13/56,919.74
  6. Step 6: Final answer
    x = 43,367.87

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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.