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Finding the Fourth Proportional to 44,487.21, 66,717.08 and 12,899.60

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Solution

The fourth proportional to 44,487.21, 66,717.08 and 12,899.60 is: 19,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,487.21 : 66,717.08 = 12,899.60 : x
  2. Step 2: Convert to fraction form
    44,487.21/66,717.08 = 12,899.60/x
  3. Step 3: Cross multiply
    44,487.21x = 66,717.08 × 12,899.60
  4. Step 4: Simplify right side
    44,487.21x = 860,623,536.20
  5. Step 5: Solve for x
    x = 860,623,536.20/44,487.21
  6. Step 6: Final answer
    x = 19,345.42

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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.