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Finding the Fourth Proportional to 66,956.88, 100,434.60 and 16,356.36

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Solution

The fourth proportional to 66,956.88, 100,434.60 and 16,356.36 is: 24,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,956.88 : 100,434.60 = 16,356.36 : x
  2. Step 2: Convert to fraction form
    66,956.88/100,434.60 = 16,356.36/x
  3. Step 3: Cross multiply
    66,956.88x = 100,434.60 × 16,356.36
  4. Step 4: Simplify right side
    66,956.88x = 1,642,744,474.06
  5. Step 5: Solve for x
    x = 1,642,744,474.06/66,956.88
  6. Step 6: Final answer
    x = 24,534.36

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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.