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Finding the Fourth Proportional to 66,247.40, 99,371.10 and 65,664.20

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Solution

The fourth proportional to 66,247.40, 99,371.10 and 65,664.20 is: 98,496.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,247.40 : 99,371.10 = 65,664.20 : x
  2. Step 2: Convert to fraction form
    66,247.40/99,371.10 = 65,664.20/x
  3. Step 3: Cross multiply
    66,247.40x = 99,371.10 × 65,664.20
  4. Step 4: Simplify right side
    66,247.40x = 6,525,123,784.62
  5. Step 5: Solve for x
    x = 6,525,123,784.62/66,247.40
  6. Step 6: Final answer
    x = 98,496.30

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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.