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Finding the Fourth Proportional to 56,703.82, 78,265.16 and 43,931.74

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Solution

The fourth proportional to 56,703.82, 78,265.16 and 43,931.74 is: 60,636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,703.82 : 78,265.16 = 43,931.74 : x
  2. Step 2: Convert to fraction form
    56,703.82/78,265.16 = 43,931.74/x
  3. Step 3: Cross multiply
    56,703.82x = 78,265.16 × 43,931.74
  4. Step 4: Simplify right side
    56,703.82x = 3,438,324,660.18
  5. Step 5: Solve for x
    x = 3,438,324,660.18/56,703.82
  6. Step 6: Final answer
    x = 60,636.56

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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.