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Finding the Fourth Proportional to 64,976.40, 89,667.12 and 35,168.40

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Solution

The fourth proportional to 64,976.40, 89,667.12 and 35,168.40 is: 48,532.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.40 : 89,667.12 = 35,168.40 : x
  2. Step 2: Convert to fraction form
    64,976.40/89,667.12 = 35,168.40/x
  3. Step 3: Cross multiply
    64,976.40x = 89,667.12 × 35,168.40
  4. Step 4: Simplify right side
    64,976.40x = 3,153,449,143.01
  5. Step 5: Solve for x
    x = 3,153,449,143.01/64,976.40
  6. Step 6: Final answer
    x = 48,532.22

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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.