Home / 66,442.17-91,688.20-36,228.09

Finding the Fourth Proportional to 66,442.17, 91,688.20 and 36,228.09

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Solution

The fourth proportional to 66,442.17, 91,688.20 and 36,228.09 is: 49,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.17 : 91,688.20 = 36,228.09 : x
  2. Step 2: Convert to fraction form
    66,442.17/91,688.20 = 36,228.09/x
  3. Step 3: Cross multiply
    66,442.17x = 91,688.20 × 36,228.09
  4. Step 4: Simplify right side
    66,442.17x = 3,321,688,361.54
  5. Step 5: Solve for x
    x = 3,321,688,361.54/66,442.17
  6. Step 6: Final answer
    x = 49,993.68

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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.