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Finding the Fourth Proportional to 70,577.38, 105,909.96 and 43,975.60

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Solution

The fourth proportional to 70,577.38, 105,909.96 and 43,975.60 is: 65,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,577.38 : 105,909.96 = 43,975.60 : x
  2. Step 2: Convert to fraction form
    70,577.38/105,909.96 = 43,975.60/x
  3. Step 3: Cross multiply
    70,577.38x = 105,909.96 × 43,975.60
  4. Step 4: Simplify right side
    70,577.38x = 4,657,454,036.98
  5. Step 5: Solve for x
    x = 4,657,454,036.98/70,577.38
  6. Step 6: Final answer
    x = 65,990.75

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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.