Home / 70,222.58-105,318.18-20,291.55

Finding the Fourth Proportional to 70,222.58, 105,318.18 and 20,291.55

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Solution

The fourth proportional to 70,222.58, 105,318.18 and 20,291.55 is: 30,432.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,222.58 : 105,318.18 = 20,291.55 : x
  2. Step 2: Convert to fraction form
    70,222.58/105,318.18 = 20,291.55/x
  3. Step 3: Cross multiply
    70,222.58x = 105,318.18 × 20,291.55
  4. Step 4: Simplify right side
    70,222.58x = 2,137,069,115.38
  5. Step 5: Solve for x
    x = 2,137,069,115.38/70,222.58
  6. Step 6: Final answer
    x = 30,432.79

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1.5x scale

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.