Home / 61,731.90-85,112.60-50,389.88

Finding the Fourth Proportional to 61,731.90, 85,112.60 and 50,389.88

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Solution

The fourth proportional to 61,731.90, 85,112.60 and 50,389.88 is: 69,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,731.90 : 85,112.60 = 50,389.88 : x
  2. Step 2: Convert to fraction form
    61,731.90/85,112.60 = 50,389.88/x
  3. Step 3: Cross multiply
    61,731.90x = 85,112.60 × 50,389.88
  4. Step 4: Simplify right side
    61,731.90x = 4,288,813,700.49
  5. Step 5: Solve for x
    x = 4,288,813,700.49/61,731.90
  6. Step 6: Final answer
    x = 69,474.84

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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.