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Finding the Fourth Proportional to 71,755.56, 99,021.96 and 39,923.91

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Solution

The fourth proportional to 71,755.56, 99,021.96 and 39,923.91 is: 55,094.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,755.56 : 99,021.96 = 39,923.91 : x
  2. Step 2: Convert to fraction form
    71,755.56/99,021.96 = 39,923.91/x
  3. Step 3: Cross multiply
    71,755.56x = 99,021.96 × 39,923.91
  4. Step 4: Simplify right side
    71,755.56x = 3,953,343,819.06
  5. Step 5: Solve for x
    x = 3,953,343,819.06/71,755.56
  6. Step 6: Final answer
    x = 55,094.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.