Home / 76,845.93-106,047.85-42,856.58

Finding the Fourth Proportional to 76,845.93, 106,047.85 and 42,856.58

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Solution

The fourth proportional to 76,845.93, 106,047.85 and 42,856.58 is: 59,142.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,845.93 : 106,047.85 = 42,856.58 : x
  2. Step 2: Convert to fraction form
    76,845.93/106,047.85 = 42,856.58/x
  3. Step 3: Cross multiply
    76,845.93x = 106,047.85 × 42,856.58
  4. Step 4: Simplify right side
    76,845.93x = 4,544,847,529.97
  5. Step 5: Solve for x
    x = 4,544,847,529.97/76,845.93
  6. Step 6: Final answer
    x = 59,142.33

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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.