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Finding the Fourth Proportional to 108,010.80, 161,943.30 and 57,418.20

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Solution

The fourth proportional to 108,010.80, 161,943.30 and 57,418.20 is: 86,088.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,010.80 : 161,943.30 = 57,418.20 : x
  2. Step 2: Convert to fraction form
    108,010.80/161,943.30 = 57,418.20/x
  3. Step 3: Cross multiply
    108,010.80x = 161,943.30 × 57,418.20
  4. Step 4: Simplify right side
    108,010.80x = 9,298,492,788.06
  5. Step 5: Solve for x
    x = 9,298,492,788.06/108,010.80
  6. Step 6: Final answer
    x = 86,088.55

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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.