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Finding the Fourth Proportional to 40,522.68, 60,783.60 and 12,820.68

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Solution

The fourth proportional to 40,522.68, 60,783.60 and 12,820.68 is: 19,230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,522.68 : 60,783.60 = 12,820.68 : x
  2. Step 2: Convert to fraction form
    40,522.68/60,783.60 = 12,820.68/x
  3. Step 3: Cross multiply
    40,522.68x = 60,783.60 × 12,820.68
  4. Step 4: Simplify right side
    40,522.68x = 779,287,084.85
  5. Step 5: Solve for x
    x = 779,287,084.85/40,522.68
  6. Step 6: Final answer
    x = 19,230.89

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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.