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Finding the Fourth Proportional to 101,675.50, 140,311.92 and 56,353.57

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Solution

The fourth proportional to 101,675.50, 140,311.92 and 56,353.57 is: 77,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,675.50 : 140,311.92 = 56,353.57 : x
  2. Step 2: Convert to fraction form
    101,675.50/140,311.92 = 56,353.57/x
  3. Step 3: Cross multiply
    101,675.50x = 140,311.92 × 56,353.57
  4. Step 4: Simplify right side
    101,675.50x = 7,907,077,605.55
  5. Step 5: Solve for x
    x = 7,907,077,605.55/101,675.50
  6. Step 6: Final answer
    x = 77,767.78

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1.5x scale

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.