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Finding the Fourth Proportional to 66,400.57, 91,622.31 and 37,323.21

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Solution

The fourth proportional to 66,400.57, 91,622.31 and 37,323.21 is: 51,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,400.57 : 91,622.31 = 37,323.21 : x
  2. Step 2: Convert to fraction form
    66,400.57/91,622.31 = 37,323.21/x
  3. Step 3: Cross multiply
    66,400.57x = 91,622.31 × 37,323.21
  4. Step 4: Simplify right side
    66,400.57x = 3,419,638,462.29
  5. Step 5: Solve for x
    x = 3,419,638,462.29/66,400.57
  6. Step 6: Final answer
    x = 51,500.14

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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.