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Finding the Fourth Proportional to 64,616.40, 96,769.08 and 43,776.72

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Solution

The fourth proportional to 64,616.40, 96,769.08 and 43,776.72 is: 65,559.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,616.40 : 96,769.08 = 43,776.72 : x
  2. Step 2: Convert to fraction form
    64,616.40/96,769.08 = 43,776.72/x
  3. Step 3: Cross multiply
    64,616.40x = 96,769.08 × 43,776.72
  4. Step 4: Simplify right side
    64,616.40x = 4,236,232,919.82
  5. Step 5: Solve for x
    x = 4,236,232,919.82/64,616.40
  6. Step 6: Final answer
    x = 65,559.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.