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Finding the Fourth Proportional to 64,100.16, 88,424.64 and 40,181.76

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Solution

The fourth proportional to 64,100.16, 88,424.64 and 40,181.76 is: 55,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,100.16 : 88,424.64 = 40,181.76 : x
  2. Step 2: Convert to fraction form
    64,100.16/88,424.64 = 40,181.76/x
  3. Step 3: Cross multiply
    64,100.16x = 88,424.64 × 40,181.76
  4. Step 4: Simplify right side
    64,100.16x = 3,553,057,662.57
  5. Step 5: Solve for x
    x = 3,553,057,662.57/64,100.16
  6. Step 6: Final answer
    x = 55,429.78

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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.