Home / 56,913.25-78,541.55-31,419.56

Finding the Fourth Proportional to 56,913.25, 78,541.55 and 31,419.56

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Solution

The fourth proportional to 56,913.25, 78,541.55 and 31,419.56 is: 43,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,913.25 : 78,541.55 = 31,419.56 : x
  2. Step 2: Convert to fraction form
    56,913.25/78,541.55 = 31,419.56/x
  3. Step 3: Cross multiply
    56,913.25x = 78,541.55 × 31,419.56
  4. Step 4: Simplify right side
    56,913.25x = 2,467,740,785.62
  5. Step 5: Solve for x
    x = 2,467,740,785.62/56,913.25
  6. Step 6: Final answer
    x = 43,359.69

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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.