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Finding the Fourth Proportional to 56,103.93, 77,418.03 and 30,951.81

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Solution

The fourth proportional to 56,103.93, 77,418.03 and 30,951.81 is: 42,710.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,103.93 : 77,418.03 = 30,951.81 : x
  2. Step 2: Convert to fraction form
    56,103.93/77,418.03 = 30,951.81/x
  3. Step 3: Cross multiply
    56,103.93x = 77,418.03 × 30,951.81
  4. Step 4: Simplify right side
    56,103.93x = 2,396,228,155.13
  5. Step 5: Solve for x
    x = 2,396,228,155.13/56,103.93
  6. Step 6: Final answer
    x = 42,710.52

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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.