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Finding the Fourth Proportional to 30,042.49, 45,070.20 and 8,984.20

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Solution

The fourth proportional to 30,042.49, 45,070.20 and 8,984.20 is: 13,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,042.49 : 45,070.20 = 8,984.20 : x
  2. Step 2: Convert to fraction form
    30,042.49/45,070.20 = 8,984.20/x
  3. Step 3: Cross multiply
    30,042.49x = 45,070.20 × 8,984.20
  4. Step 4: Simplify right side
    30,042.49x = 404,919,690.84
  5. Step 5: Solve for x
    x = 404,919,690.84/30,042.49
  6. Step 6: Final answer
    x = 13,478.23

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