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Finding the Fourth Proportional to 64,984.48, 89,680.08 and 36,690.40

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Solution

The fourth proportional to 64,984.48, 89,680.08 and 36,690.40 is: 50,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.48 : 89,680.08 = 36,690.40 : x
  2. Step 2: Convert to fraction form
    64,984.48/89,680.08 = 36,690.40/x
  3. Step 3: Cross multiply
    64,984.48x = 89,680.08 × 36,690.40
  4. Step 4: Simplify right side
    64,984.48x = 3,290,398,007.23
  5. Step 5: Solve for x
    x = 3,290,398,007.23/64,984.48
  6. Step 6: Final answer
    x = 50,633.60

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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.