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Finding the Fourth Proportional to 66,409.50, 91,650.87 and 36,607.26

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Solution

The fourth proportional to 66,409.50, 91,650.87 and 36,607.26 is: 50,521.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,409.50 : 91,650.87 = 36,607.26 : x
  2. Step 2: Convert to fraction form
    66,409.50/91,650.87 = 36,607.26/x
  3. Step 3: Cross multiply
    66,409.50x = 91,650.87 × 36,607.26
  4. Step 4: Simplify right side
    66,409.50x = 3,355,087,227.32
  5. Step 5: Solve for x
    x = 3,355,087,227.32/66,409.50
  6. Step 6: Final answer
    x = 50,521.19

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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.