Home / 72,685.90-109,063.26-30,575.20

Finding the Fourth Proportional to 72,685.90, 109,063.26 and 30,575.20

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Solution

The fourth proportional to 72,685.90, 109,063.26 and 30,575.20 is: 45,877.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,685.90 : 109,063.26 = 30,575.20 : x
  2. Step 2: Convert to fraction form
    72,685.90/109,063.26 = 30,575.20/x
  3. Step 3: Cross multiply
    72,685.90x = 109,063.26 × 30,575.20
  4. Step 4: Simplify right side
    72,685.90x = 3,334,630,987.15
  5. Step 5: Solve for x
    x = 3,334,630,987.15/72,685.90
  6. Step 6: Final answer
    x = 45,877.27

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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.