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Finding the Fourth Proportional to 70,420.40, 105,559.52 and 44,143.59

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Solution

The fourth proportional to 70,420.40, 105,559.52 and 44,143.59 is: 66,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,420.40 : 105,559.52 = 44,143.59 : x
  2. Step 2: Convert to fraction form
    70,420.40/105,559.52 = 44,143.59/x
  3. Step 3: Cross multiply
    70,420.40x = 105,559.52 × 44,143.59
  4. Step 4: Simplify right side
    70,420.40x = 4,659,775,950.76
  5. Step 5: Solve for x
    x = 4,659,775,950.76/70,420.40
  6. Step 6: Final answer
    x = 66,170.83

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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.