Home / 78,695.25-108,599.46-42,885.27

Finding the Fourth Proportional to 78,695.25, 108,599.46 and 42,885.27

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Solution

The fourth proportional to 78,695.25, 108,599.46 and 42,885.27 is: 59,181.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.25 : 108,599.46 = 42,885.27 : x
  2. Step 2: Convert to fraction form
    78,695.25/108,599.46 = 42,885.27/x
  3. Step 3: Cross multiply
    78,695.25x = 108,599.46 × 42,885.27
  4. Step 4: Simplify right side
    78,695.25x = 4,657,317,163.95
  5. Step 5: Solve for x
    x = 4,657,317,163.95/78,695.25
  6. Step 6: Final answer
    x = 59,181.68

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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.