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Finding the Fourth Proportional to 79,703.10, 109,990.98 and 43,894.35

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Solution

The fourth proportional to 79,703.10, 109,990.98 and 43,894.35 is: 60,574.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,703.10 : 109,990.98 = 43,894.35 : x
  2. Step 2: Convert to fraction form
    79,703.10/109,990.98 = 43,894.35/x
  3. Step 3: Cross multiply
    79,703.10x = 109,990.98 × 43,894.35
  4. Step 4: Simplify right side
    79,703.10x = 4,827,982,572.96
  5. Step 5: Solve for x
    x = 4,827,982,572.96/79,703.10
  6. Step 6: Final answer
    x = 60,574.59

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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.