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Finding the Fourth Proportional to 72,164.10, 108,246.15 and 45,984.90

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Solution

The fourth proportional to 72,164.10, 108,246.15 and 45,984.90 is: 68,977.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,164.10 : 108,246.15 = 45,984.90 : x
  2. Step 2: Convert to fraction form
    72,164.10/108,246.15 = 45,984.90/x
  3. Step 3: Cross multiply
    72,164.10x = 108,246.15 × 45,984.90
  4. Step 4: Simplify right side
    72,164.10x = 4,977,688,383.14
  5. Step 5: Solve for x
    x = 4,977,688,383.14/72,164.10
  6. Step 6: Final answer
    x = 68,977.35

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Similar ratio
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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.