Home / 73,157.42-109,782.25-28,778.40

Finding the Fourth Proportional to 73,157.42, 109,782.25 and 28,778.40

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Solution

The fourth proportional to 73,157.42, 109,782.25 and 28,778.40 is: 43,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,157.42 : 109,782.25 = 28,778.40 : x
  2. Step 2: Convert to fraction form
    73,157.42/109,782.25 = 28,778.40/x
  3. Step 3: Cross multiply
    73,157.42x = 109,782.25 × 28,778.40
  4. Step 4: Simplify right side
    73,157.42x = 3,159,357,503.40
  5. Step 5: Solve for x
    x = 3,159,357,503.40/73,157.42
  6. Step 6: Final answer
    x = 43,185.75

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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.