Home / 79,706.20-109,990.34-45,712.93

Finding the Fourth Proportional to 79,706.20, 109,990.34 and 45,712.93

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Solution

The fourth proportional to 79,706.20, 109,990.34 and 45,712.93 is: 63,081.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,706.20 : 109,990.34 = 45,712.93 : x
  2. Step 2: Convert to fraction form
    79,706.20/109,990.34 = 45,712.93/x
  3. Step 3: Cross multiply
    79,706.20x = 109,990.34 × 45,712.93
  4. Step 4: Simplify right side
    79,706.20x = 5,027,980,713.10
  5. Step 5: Solve for x
    x = 5,027,980,713.10/79,706.20
  6. Step 6: Final answer
    x = 63,081.43

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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.