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Finding the Fourth Proportional to 79,903.48, 119,897.08 and 30,018

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Solution

The fourth proportional to 79,903.48, 119,897.08 and 30,018 is: 45,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,903.48 : 119,897.08 = 30,018 : x
  2. Step 2: Convert to fraction form
    79,903.48/119,897.08 = 30,018/x
  3. Step 3: Cross multiply
    79,903.48x = 119,897.08 × 30,018
  4. Step 4: Simplify right side
    79,903.48x = 3,599,070,547.44
  5. Step 5: Solve for x
    x = 3,599,070,547.44/79,903.48
  6. Step 6: Final answer
    x = 45,042.73

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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.