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Finding the Fourth Proportional to 64,866.78, 89,516.10 and 35,058.78

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Solution

The fourth proportional to 64,866.78, 89,516.10 and 35,058.78 is: 48,381.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,866.78 : 89,516.10 = 35,058.78 : x
  2. Step 2: Convert to fraction form
    64,866.78/89,516.10 = 35,058.78/x
  3. Step 3: Cross multiply
    64,866.78x = 89,516.10 × 35,058.78
  4. Step 4: Simplify right side
    64,866.78x = 3,138,325,256.36
  5. Step 5: Solve for x
    x = 3,138,325,256.36/64,866.78
  6. Step 6: Final answer
    x = 48,381.09

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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.