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Finding the Fourth Proportional to 66,887.51, 100,331.46 and 16,967.61

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Solution

The fourth proportional to 66,887.51, 100,331.46 and 16,967.61 is: 25,451.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,887.51 : 100,331.46 = 16,967.61 : x
  2. Step 2: Convert to fraction form
    66,887.51/100,331.46 = 16,967.61/x
  3. Step 3: Cross multiply
    66,887.51x = 100,331.46 × 16,967.61
  4. Step 4: Simplify right side
    66,887.51x = 1,702,385,084.01
  5. Step 5: Solve for x
    x = 1,702,385,084.01/66,887.51
  6. Step 6: Final answer
    x = 25,451.47

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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.