Home / 61,864.98-85,410.34-40,680.78

Finding the Fourth Proportional to 61,864.98, 85,410.34 and 40,680.78

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Solution

The fourth proportional to 61,864.98, 85,410.34 and 40,680.78 is: 56,163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,864.98 : 85,410.34 = 40,680.78 : x
  2. Step 2: Convert to fraction form
    61,864.98/85,410.34 = 40,680.78/x
  3. Step 3: Cross multiply
    61,864.98x = 85,410.34 × 40,680.78
  4. Step 4: Simplify right side
    61,864.98x = 3,474,559,251.27
  5. Step 5: Solve for x
    x = 3,474,559,251.27/61,864.98
  6. Step 6: Final answer
    x = 56,163.59

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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.