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Finding the Fourth Proportional to 73,790, 101,830.20 and 43,982

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Solution

The fourth proportional to 73,790, 101,830.20 and 43,982 is: 60,695.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,790 : 101,830.20 = 43,982 : x
  2. Step 2: Convert to fraction form
    73,790/101,830.20 = 43,982/x
  3. Step 3: Cross multiply
    73,790x = 101,830.20 × 43,982
  4. Step 4: Simplify right side
    73,790x = 4,478,695,856.40
  5. Step 5: Solve for x
    x = 4,478,695,856.40/73,790
  6. Step 6: Final answer
    x = 60,695.16

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Why These Related Problems?

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