Home / 66,427.20-99,640.80-38,433.60

Finding the Fourth Proportional to 66,427.20, 99,640.80 and 38,433.60

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Solution

The fourth proportional to 66,427.20, 99,640.80 and 38,433.60 is: 57,650.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,427.20 : 99,640.80 = 38,433.60 : x
  2. Step 2: Convert to fraction form
    66,427.20/99,640.80 = 38,433.60/x
  3. Step 3: Cross multiply
    66,427.20x = 99,640.80 × 38,433.60
  4. Step 4: Simplify right side
    66,427.20x = 3,829,554,650.88
  5. Step 5: Solve for x
    x = 3,829,554,650.88/66,427.20
  6. Step 6: Final answer
    x = 57,650.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.