Home / 70,421.52-105,561.20-44,144.72

Finding the Fourth Proportional to 70,421.52, 105,561.20 and 44,144.72

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Solution

The fourth proportional to 70,421.52, 105,561.20 and 44,144.72 is: 66,172.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,421.52 : 105,561.20 = 44,144.72 : x
  2. Step 2: Convert to fraction form
    70,421.52/105,561.20 = 44,144.72/x
  3. Step 3: Cross multiply
    70,421.52x = 105,561.20 × 44,144.72
  4. Step 4: Simplify right side
    70,421.52x = 4,659,969,199.42
  5. Step 5: Solve for x
    x = 4,659,969,199.42/70,421.52
  6. Step 6: Final answer
    x = 66,172.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.