Home / 79,316.10-109,398.87-67,360.50

Finding the Fourth Proportional to 79,316.10, 109,398.87 and 67,360.50

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Solution

The fourth proportional to 79,316.10, 109,398.87 and 67,360.50 is: 92,908.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,316.10 : 109,398.87 = 67,360.50 : x
  2. Step 2: Convert to fraction form
    79,316.10/109,398.87 = 67,360.50/x
  3. Step 3: Cross multiply
    79,316.10x = 109,398.87 × 67,360.50
  4. Step 4: Simplify right side
    79,316.10x = 7,369,162,582.64
  5. Step 5: Solve for x
    x = 7,369,162,582.64/79,316.10
  6. Step 6: Final answer
    x = 92,908.79

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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.