Home / 40,056.21-55,218.63-31,531.02

Finding the Fourth Proportional to 40,056.21, 55,218.63 and 31,531.02

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Solution

The fourth proportional to 40,056.21, 55,218.63 and 31,531.02 is: 43,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,056.21 : 55,218.63 = 31,531.02 : x
  2. Step 2: Convert to fraction form
    40,056.21/55,218.63 = 31,531.02/x
  3. Step 3: Cross multiply
    40,056.21x = 55,218.63 × 31,531.02
  4. Step 4: Simplify right side
    40,056.21x = 1,741,099,726.90
  5. Step 5: Solve for x
    x = 1,741,099,726.90/40,056.21
  6. Step 6: Final answer
    x = 43,466.41

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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.