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Finding the Fourth Proportional to 66,995.29, 100,361.58 and 38,856.23

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Solution

The fourth proportional to 66,995.29, 100,361.58 and 38,856.23 is: 58,208.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,995.29 : 100,361.58 = 38,856.23 : x
  2. Step 2: Convert to fraction form
    66,995.29/100,361.58 = 38,856.23/x
  3. Step 3: Cross multiply
    66,995.29x = 100,361.58 × 38,856.23
  4. Step 4: Simplify right side
    66,995.29x = 3,899,672,635.64
  5. Step 5: Solve for x
    x = 3,899,672,635.64/66,995.29
  6. Step 6: Final answer
    x = 58,208.16

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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.