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Finding the Fourth Proportional to 85,851.03, 128,773.80 and 22,669.20

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Solution

The fourth proportional to 85,851.03, 128,773.80 and 22,669.20 is: 34,003.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,851.03 : 128,773.80 = 22,669.20 : x
  2. Step 2: Convert to fraction form
    85,851.03/128,773.80 = 22,669.20/x
  3. Step 3: Cross multiply
    85,851.03x = 128,773.80 × 22,669.20
  4. Step 4: Simplify right side
    85,851.03x = 2,919,199,026.96
  5. Step 5: Solve for x
    x = 2,919,199,026.96/85,851.03
  6. Step 6: Final answer
    x = 34,003.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.