Home / 76,403.56-105,441.06-42,868.84

Finding the Fourth Proportional to 76,403.56, 105,441.06 and 42,868.84

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Solution

The fourth proportional to 76,403.56, 105,441.06 and 42,868.84 is: 59,161.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,403.56 : 105,441.06 = 42,868.84 : x
  2. Step 2: Convert to fraction form
    76,403.56/105,441.06 = 42,868.84/x
  3. Step 3: Cross multiply
    76,403.56x = 105,441.06 × 42,868.84
  4. Step 4: Simplify right side
    76,403.56x = 4,520,135,930.57
  5. Step 5: Solve for x
    x = 4,520,135,930.57/76,403.56
  6. Step 6: Final answer
    x = 59,161.33

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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.