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Finding the Fourth Proportional to 65,266.64, 90,069.79 and 36,972.32

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Solution

The fourth proportional to 65,266.64, 90,069.79 and 36,972.32 is: 51,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,266.64 : 90,069.79 = 36,972.32 : x
  2. Step 2: Convert to fraction form
    65,266.64/90,069.79 = 36,972.32/x
  3. Step 3: Cross multiply
    65,266.64x = 90,069.79 × 36,972.32
  4. Step 4: Simplify right side
    65,266.64x = 3,330,089,098.21
  5. Step 5: Solve for x
    x = 3,330,089,098.21/65,266.64
  6. Step 6: Final answer
    x = 51,022.84

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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.