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Finding the Fourth Proportional to 45,003.90, 67,492.95 and 13,412.64

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Solution

The fourth proportional to 45,003.90, 67,492.95 and 13,412.64 is: 20,115.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,003.90 : 67,492.95 = 13,412.64 : x
  2. Step 2: Convert to fraction form
    45,003.90/67,492.95 = 13,412.64/x
  3. Step 3: Cross multiply
    45,003.90x = 67,492.95 × 13,412.64
  4. Step 4: Simplify right side
    45,003.90x = 905,258,640.89
  5. Step 5: Solve for x
    x = 905,258,640.89/45,003.90
  6. Step 6: Final answer
    x = 20,115.12

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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.