Home / 76,191.12-105,147.18-42,657.12

Finding the Fourth Proportional to 76,191.12, 105,147.18 and 42,657.12

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Solution

The fourth proportional to 76,191.12, 105,147.18 and 42,657.12 is: 58,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,191.12 : 105,147.18 = 42,657.12 : x
  2. Step 2: Convert to fraction form
    76,191.12/105,147.18 = 42,657.12/x
  3. Step 3: Cross multiply
    76,191.12x = 105,147.18 × 42,657.12
  4. Step 4: Simplify right side
    76,191.12x = 4,485,275,874.92
  5. Step 5: Solve for x
    x = 4,485,275,874.92/76,191.12
  6. Step 6: Final answer
    x = 58,868.75

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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.