Home / 56,908.60-78,538.22-31,419.88

Finding the Fourth Proportional to 56,908.60, 78,538.22 and 31,419.88

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Solution

The fourth proportional to 56,908.60, 78,538.22 and 31,419.88 is: 43,361.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.60 : 78,538.22 = 31,419.88 : x
  2. Step 2: Convert to fraction form
    56,908.60/78,538.22 = 31,419.88/x
  3. Step 3: Cross multiply
    56,908.60x = 78,538.22 × 31,419.88
  4. Step 4: Simplify right side
    56,908.60x = 2,467,661,447.81
  5. Step 5: Solve for x
    x = 2,467,661,447.81/56,908.60
  6. Step 6: Final answer
    x = 43,361.84

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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.