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Finding the Fourth Proportional to 66,801.40, 100,007.70 and 40,492.60

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Solution

The fourth proportional to 66,801.40, 100,007.70 and 40,492.60 is: 60,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,801.40 : 100,007.70 = 40,492.60 : x
  2. Step 2: Convert to fraction form
    66,801.40/100,007.70 = 40,492.60/x
  3. Step 3: Cross multiply
    66,801.40x = 100,007.70 × 40,492.60
  4. Step 4: Simplify right side
    66,801.40x = 4,049,571,793.02
  5. Step 5: Solve for x
    x = 4,049,571,793.02/66,801.40
  6. Step 6: Final answer
    x = 60,621.06

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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.