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Finding the Fourth Proportional to 40,478.10, 60,672.60 and 14,169.30

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Solution

The fourth proportional to 40,478.10, 60,672.60 and 14,169.30 is: 21,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,478.10 : 60,672.60 = 14,169.30 : x
  2. Step 2: Convert to fraction form
    40,478.10/60,672.60 = 14,169.30/x
  3. Step 3: Cross multiply
    40,478.10x = 60,672.60 × 14,169.30
  4. Step 4: Simplify right side
    40,478.10x = 859,688,271.18
  5. Step 5: Solve for x
    x = 859,688,271.18/40,478.10
  6. Step 6: Final answer
    x = 21,238.36

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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.