Home / 76,815.11-106,005.29-42,825.75

Finding the Fourth Proportional to 76,815.11, 106,005.29 and 42,825.75

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Solution

The fourth proportional to 76,815.11, 106,005.29 and 42,825.75 is: 59,099.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.11 : 106,005.29 = 42,825.75 : x
  2. Step 2: Convert to fraction form
    76,815.11/106,005.29 = 42,825.75/x
  3. Step 3: Cross multiply
    76,815.11x = 106,005.29 × 42,825.75
  4. Step 4: Simplify right side
    76,815.11x = 4,539,755,834.09
  5. Step 5: Solve for x
    x = 4,539,755,834.09/76,815.11
  6. Step 6: Final answer
    x = 59,099.78

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1.5x scale

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.