Home / 78,195.74-107,910.26-42,385.64

Finding the Fourth Proportional to 78,195.74, 107,910.26 and 42,385.64

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Solution

The fourth proportional to 78,195.74, 107,910.26 and 42,385.64 is: 58,492.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,195.74 : 107,910.26 = 42,385.64 : x
  2. Step 2: Convert to fraction form
    78,195.74/107,910.26 = 42,385.64/x
  3. Step 3: Cross multiply
    78,195.74x = 107,910.26 × 42,385.64
  4. Step 4: Simplify right side
    78,195.74x = 4,573,845,432.67
  5. Step 5: Solve for x
    x = 4,573,845,432.67/78,195.74
  6. Step 6: Final answer
    x = 58,492.26

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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.