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Finding the Fourth Proportional to 79,446, 109,638.36 and 45,460.56

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Solution

The fourth proportional to 79,446, 109,638.36 and 45,460.56 is: 62,737.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,446 : 109,638.36 = 45,460.56 : x
  2. Step 2: Convert to fraction form
    79,446/109,638.36 = 45,460.56/x
  3. Step 3: Cross multiply
    79,446x = 109,638.36 × 45,460.56
  4. Step 4: Simplify right side
    79,446x = 4,984,221,243.08
  5. Step 5: Solve for x
    x = 4,984,221,243.08/79,446
  6. Step 6: Final answer
    x = 62,737.22

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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.