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Finding the Fourth Proportional to 66,939.09, 100,425.51 and 47,256.09

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Solution

The fourth proportional to 66,939.09, 100,425.51 and 47,256.09 is: 70,896.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,939.09 : 100,425.51 = 47,256.09 : x
  2. Step 2: Convert to fraction form
    66,939.09/100,425.51 = 47,256.09/x
  3. Step 3: Cross multiply
    66,939.09x = 100,425.51 × 47,256.09
  4. Step 4: Simplify right side
    66,939.09x = 4,745,716,938.86
  5. Step 5: Solve for x
    x = 4,745,716,938.86/66,939.09
  6. Step 6: Final answer
    x = 70,896.05

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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.