Home / 56,999.72-78,659.17-31,507.81

Finding the Fourth Proportional to 56,999.72, 78,659.17 and 31,507.81

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Solution

The fourth proportional to 56,999.72, 78,659.17 and 31,507.81 is: 43,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.72 : 78,659.17 = 31,507.81 : x
  2. Step 2: Convert to fraction form
    56,999.72/78,659.17 = 31,507.81/x
  3. Step 3: Cross multiply
    56,999.72x = 78,659.17 × 31,507.81
  4. Step 4: Simplify right side
    56,999.72x = 2,478,377,907.70
  5. Step 5: Solve for x
    x = 2,478,377,907.70/56,999.72
  6. Step 6: Final answer
    x = 43,480.53

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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.