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Finding the Fourth Proportional to 64,913.28, 89,580.28 and 35,105.28

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Solution

The fourth proportional to 64,913.28, 89,580.28 and 35,105.28 is: 48,445.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,913.28 : 89,580.28 = 35,105.28 : x
  2. Step 2: Convert to fraction form
    64,913.28/89,580.28 = 35,105.28/x
  3. Step 3: Cross multiply
    64,913.28x = 89,580.28 × 35,105.28
  4. Step 4: Simplify right side
    64,913.28x = 3,144,740,811.88
  5. Step 5: Solve for x
    x = 3,144,740,811.88/64,913.28
  6. Step 6: Final answer
    x = 48,445.26

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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.