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Finding the Fourth Proportional to 66,952.78, 100,429.14 and 25,399.78

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Solution

The fourth proportional to 66,952.78, 100,429.14 and 25,399.78 is: 38,099.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,952.78 : 100,429.14 = 25,399.78 : x
  2. Step 2: Convert to fraction form
    66,952.78/100,429.14 = 25,399.78/x
  3. Step 3: Cross multiply
    66,952.78x = 100,429.14 × 25,399.78
  4. Step 4: Simplify right side
    66,952.78x = 2,550,878,061.59
  5. Step 5: Solve for x
    x = 2,550,878,061.59/66,952.78
  6. Step 6: Final answer
    x = 38,099.66

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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.