Home / 78,892.20-108,595.02-68,802.84

Finding the Fourth Proportional to 78,892.20, 108,595.02 and 68,802.84

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Solution

The fourth proportional to 78,892.20, 108,595.02 and 68,802.84 is: 94,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.20 : 108,595.02 = 68,802.84 : x
  2. Step 2: Convert to fraction form
    78,892.20/108,595.02 = 68,802.84/x
  3. Step 3: Cross multiply
    78,892.20x = 108,595.02 × 68,802.84
  4. Step 4: Simplify right side
    78,892.20x = 7,471,645,785.86
  5. Step 5: Solve for x
    x = 7,471,645,785.86/78,892.20
  6. Step 6: Final answer
    x = 94,707.03

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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.