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Finding the Fourth Proportional to 61,666.37, 85,041.84 and 40,933.20

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Solution

The fourth proportional to 61,666.37, 85,041.84 and 40,933.20 is: 56,449.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,666.37 : 85,041.84 = 40,933.20 : x
  2. Step 2: Convert to fraction form
    61,666.37/85,041.84 = 40,933.20/x
  3. Step 3: Cross multiply
    61,666.37x = 85,041.84 × 40,933.20
  4. Step 4: Simplify right side
    61,666.37x = 3,481,034,645.09
  5. Step 5: Solve for x
    x = 3,481,034,645.09/61,666.37
  6. Step 6: Final answer
    x = 56,449.48

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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.