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Finding the Fourth Proportional to 66,144.48, 91,281.04 and 36,336.48

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Solution

The fourth proportional to 66,144.48, 91,281.04 and 36,336.48 is: 50,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,144.48 : 91,281.04 = 36,336.48 : x
  2. Step 2: Convert to fraction form
    66,144.48/91,281.04 = 36,336.48/x
  3. Step 3: Cross multiply
    66,144.48x = 91,281.04 × 36,336.48
  4. Step 4: Simplify right side
    66,144.48x = 3,316,831,684.34
  5. Step 5: Solve for x
    x = 3,316,831,684.34/66,144.48
  6. Step 6: Final answer
    x = 50,145.25

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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.