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Finding the Fourth Proportional to 64,984.32, 89,680.08 and 36,690.24

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Solution

The fourth proportional to 64,984.32, 89,680.08 and 36,690.24 is: 50,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.32 : 89,680.08 = 36,690.24 : x
  2. Step 2: Convert to fraction form
    64,984.32/89,680.08 = 36,690.24/x
  3. Step 3: Cross multiply
    64,984.32x = 89,680.08 × 36,690.24
  4. Step 4: Simplify right side
    64,984.32x = 3,290,383,658.42
  5. Step 5: Solve for x
    x = 3,290,383,658.42/64,984.32
  6. Step 6: Final answer
    x = 50,633.50

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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.