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Finding the Fourth Proportional to 56,999.69, 78,659.57 and 31,849.19

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Solution

The fourth proportional to 56,999.69, 78,659.57 and 31,849.19 is: 43,951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.69 : 78,659.57 = 31,849.19 : x
  2. Step 2: Convert to fraction form
    56,999.69/78,659.57 = 31,849.19/x
  3. Step 3: Cross multiply
    56,999.69x = 78,659.57 × 31,849.19
  4. Step 4: Simplify right side
    56,999.69x = 2,505,243,590.25
  5. Step 5: Solve for x
    x = 2,505,243,590.25/56,999.69
  6. Step 6: Final answer
    x = 43,951.88

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1.5x scale

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.