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Finding the Fourth Proportional to 80,647.42, 120,970.98 and 21,483.26

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Solution

The fourth proportional to 80,647.42, 120,970.98 and 21,483.26 is: 32,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,647.42 : 120,970.98 = 21,483.26 : x
  2. Step 2: Convert to fraction form
    80,647.42/120,970.98 = 21,483.26/x
  3. Step 3: Cross multiply
    80,647.42x = 120,970.98 × 21,483.26
  4. Step 4: Simplify right side
    80,647.42x = 2,598,851,015.79
  5. Step 5: Solve for x
    x = 2,598,851,015.79/80,647.42
  6. Step 6: Final answer
    x = 32,224.85

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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.