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Finding the Fourth Proportional to 101,874.60, 140,584.30 and 56,551.40

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Solution

The fourth proportional to 101,874.60, 140,584.30 and 56,551.40 is: 78,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,874.60 : 140,584.30 = 56,551.40 : x
  2. Step 2: Convert to fraction form
    101,874.60/140,584.30 = 56,551.40/x
  3. Step 3: Cross multiply
    101,874.60x = 140,584.30 × 56,551.40
  4. Step 4: Simplify right side
    101,874.60x = 7,950,238,983.02
  5. Step 5: Solve for x
    x = 7,950,238,983.02/101,874.60
  6. Step 6: Final answer
    x = 78,039.46

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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.