Home / 61,845.12-85,379.34-48,387.78

Finding the Fourth Proportional to 61,845.12, 85,379.34 and 48,387.78

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Solution

The fourth proportional to 61,845.12, 85,379.34 and 48,387.78 is: 66,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,845.12 : 85,379.34 = 48,387.78 : x
  2. Step 2: Convert to fraction form
    61,845.12/85,379.34 = 48,387.78/x
  3. Step 3: Cross multiply
    61,845.12x = 85,379.34 × 48,387.78
  4. Step 4: Simplify right side
    61,845.12x = 4,131,316,720.47
  5. Step 5: Solve for x
    x = 4,131,316,720.47/61,845.12
  6. Step 6: Final answer
    x = 66,801.01

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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.