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Finding the Fourth Proportional to 78,997.67, 109,024.14 and 43,192.90

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Solution

The fourth proportional to 78,997.67, 109,024.14 and 43,192.90 is: 59,610.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,997.67 : 109,024.14 = 43,192.90 : x
  2. Step 2: Convert to fraction form
    78,997.67/109,024.14 = 43,192.90/x
  3. Step 3: Cross multiply
    78,997.67x = 109,024.14 × 43,192.90
  4. Step 4: Simplify right side
    78,997.67x = 4,709,068,776.61
  5. Step 5: Solve for x
    x = 4,709,068,776.61/78,997.67
  6. Step 6: Final answer
    x = 59,610.22

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1.5x scale

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.