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Finding the Fourth Proportional to 55,419.60, 76,460.08 and 31,540.30

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Solution

The fourth proportional to 55,419.60, 76,460.08 and 31,540.30 is: 43,514.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419.60 : 76,460.08 = 31,540.30 : x
  2. Step 2: Convert to fraction form
    55,419.60/76,460.08 = 31,540.30/x
  3. Step 3: Cross multiply
    55,419.60x = 76,460.08 × 31,540.30
  4. Step 4: Simplify right side
    55,419.60x = 2,411,573,861.22
  5. Step 5: Solve for x
    x = 2,411,573,861.22/55,419.60
  6. Step 6: Final answer
    x = 43,514.82

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.