Home / 61,987.41-85,542.21-35,129.70

Finding the Fourth Proportional to 61,987.41, 85,542.21 and 35,129.70

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Solution

The fourth proportional to 61,987.41, 85,542.21 and 35,129.70 is: 48,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987.41 : 85,542.21 = 35,129.70 : x
  2. Step 2: Convert to fraction form
    61,987.41/85,542.21 = 35,129.70/x
  3. Step 3: Cross multiply
    61,987.41x = 85,542.21 × 35,129.70
  4. Step 4: Simplify right side
    61,987.41x = 3,005,072,174.64
  5. Step 5: Solve for x
    x = 3,005,072,174.64/61,987.41
  6. Step 6: Final answer
    x = 48,478.75

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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.