Home / 66,438.45-91,685.60-36,223.98

Finding the Fourth Proportional to 66,438.45, 91,685.60 and 36,223.98

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Solution

The fourth proportional to 66,438.45, 91,685.60 and 36,223.98 is: 49,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.45 : 91,685.60 = 36,223.98 : x
  2. Step 2: Convert to fraction form
    66,438.45/91,685.60 = 36,223.98/x
  3. Step 3: Cross multiply
    66,438.45x = 91,685.60 × 36,223.98
  4. Step 4: Simplify right side
    66,438.45x = 3,321,217,623.30
  5. Step 5: Solve for x
    x = 3,321,217,623.30/66,438.45
  6. Step 6: Final answer
    x = 49,989.39

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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.