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Finding the Fourth Proportional to 64,914.75, 89,580.74 and 36,618.21

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Solution

The fourth proportional to 64,914.75, 89,580.74 and 36,618.21 is: 50,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,914.75 : 89,580.74 = 36,618.21 : x
  2. Step 2: Convert to fraction form
    64,914.75/89,580.74 = 36,618.21/x
  3. Step 3: Cross multiply
    64,914.75x = 89,580.74 × 36,618.21
  4. Step 4: Simplify right side
    64,914.75x = 3,280,286,166.18
  5. Step 5: Solve for x
    x = 3,280,286,166.18/64,914.75
  6. Step 6: Final answer
    x = 50,532.22

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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.