Home / 78,910.34-108,898.65-43,102.28

Finding the Fourth Proportional to 78,910.34, 108,898.65 and 43,102.28

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Solution

The fourth proportional to 78,910.34, 108,898.65 and 43,102.28 is: 59,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.34 : 108,898.65 = 43,102.28 : x
  2. Step 2: Convert to fraction form
    78,910.34/108,898.65 = 43,102.28/x
  3. Step 3: Cross multiply
    78,910.34x = 108,898.65 × 43,102.28
  4. Step 4: Simplify right side
    78,910.34x = 4,693,780,103.92
  5. Step 5: Solve for x
    x = 4,693,780,103.92/78,910.34
  6. Step 6: Final answer
    x = 59,482.45

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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.