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Finding the Fourth Proportional to 64,638.48, 89,200.68 and 36,344.40

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Solution

The fourth proportional to 64,638.48, 89,200.68 and 36,344.40 is: 50,155.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,638.48 : 89,200.68 = 36,344.40 : x
  2. Step 2: Convert to fraction form
    64,638.48/89,200.68 = 36,344.40/x
  3. Step 3: Cross multiply
    64,638.48x = 89,200.68 × 36,344.40
  4. Step 4: Simplify right side
    64,638.48x = 3,241,945,194.19
  5. Step 5: Solve for x
    x = 3,241,945,194.19/64,638.48
  6. Step 6: Final answer
    x = 50,155.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.