Home / 76,815.83-106,013.70-42,829.85

Finding the Fourth Proportional to 76,815.83, 106,013.70 and 42,829.85

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Solution

The fourth proportional to 76,815.83, 106,013.70 and 42,829.85 is: 59,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,815.83 : 106,013.70 = 42,829.85 : x
  2. Step 2: Convert to fraction form
    76,815.83/106,013.70 = 42,829.85/x
  3. Step 3: Cross multiply
    76,815.83x = 106,013.70 × 42,829.85
  4. Step 4: Simplify right side
    76,815.83x = 4,540,550,338.88
  5. Step 5: Solve for x
    x = 4,540,550,338.88/76,815.83
  6. Step 6: Final answer
    x = 59,109.57

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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.