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Finding the Fourth Proportional to 45,903.90, 68,856.16 and 12,627.48

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Solution

The fourth proportional to 45,903.90, 68,856.16 and 12,627.48 is: 18,941.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,903.90 : 68,856.16 = 12,627.48 : x
  2. Step 2: Convert to fraction form
    45,903.90/68,856.16 = 12,627.48/x
  3. Step 3: Cross multiply
    45,903.90x = 68,856.16 × 12,627.48
  4. Step 4: Simplify right side
    45,903.90x = 869,479,783.28
  5. Step 5: Solve for x
    x = 869,479,783.28/45,903.90
  6. Step 6: Final answer
    x = 18,941.31

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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.