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Finding the Fourth Proportional to 66,652.80, 91,990.26 and 40,826.76

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Solution

The fourth proportional to 66,652.80, 91,990.26 and 40,826.76 is: 56,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,652.80 : 91,990.26 = 40,826.76 : x
  2. Step 2: Convert to fraction form
    66,652.80/91,990.26 = 40,826.76/x
  3. Step 3: Cross multiply
    66,652.80x = 91,990.26 × 40,826.76
  4. Step 4: Simplify right side
    66,652.80x = 3,755,664,267.36
  5. Step 5: Solve for x
    x = 3,755,664,267.36/66,652.80
  6. Step 6: Final answer
    x = 56,346.68

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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.