Home / 56,914.60-78,543.30-31,420.86

Finding the Fourth Proportional to 56,914.60, 78,543.30 and 31,420.86

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Solution

The fourth proportional to 56,914.60, 78,543.30 and 31,420.86 is: 43,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,914.60 : 78,543.30 = 31,420.86 : x
  2. Step 2: Convert to fraction form
    56,914.60/78,543.30 = 31,420.86/x
  3. Step 3: Cross multiply
    56,914.60x = 78,543.30 × 31,420.86
  4. Step 4: Simplify right side
    56,914.60x = 2,467,898,033.22
  5. Step 5: Solve for x
    x = 2,467,898,033.22/56,914.60
  6. Step 6: Final answer
    x = 43,361.42

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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.