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Finding the Fourth Proportional to 71,752.96, 99,023.82 and 39,921.93

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Solution

The fourth proportional to 71,752.96, 99,023.82 and 39,921.93 is: 55,094.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,752.96 : 99,023.82 = 39,921.93 : x
  2. Step 2: Convert to fraction form
    71,752.96/99,023.82 = 39,921.93/x
  3. Step 3: Cross multiply
    71,752.96x = 99,023.82 × 39,921.93
  4. Step 4: Simplify right side
    71,752.96x = 3,953,222,010.37
  5. Step 5: Solve for x
    x = 3,953,222,010.37/71,752.96
  6. Step 6: Final answer
    x = 55,094.90

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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.