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Finding the Fourth Proportional to 101,283.64, 139,759.50 and 55,958.92

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Solution

The fourth proportional to 101,283.64, 139,759.50 and 55,958.92 is: 77,216.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,283.64 : 139,759.50 = 55,958.92 : x
  2. Step 2: Convert to fraction form
    101,283.64/139,759.50 = 55,958.92/x
  3. Step 3: Cross multiply
    101,283.64x = 139,759.50 × 55,958.92
  4. Step 4: Simplify right side
    101,283.64x = 7,820,790,679.74
  5. Step 5: Solve for x
    x = 7,820,790,679.74/101,283.64
  6. Step 6: Final answer
    x = 77,216.72

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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.