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Finding the Fourth Proportional to 104,390.40, 144,058.32 and 61,983.84

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Solution

The fourth proportional to 104,390.40, 144,058.32 and 61,983.84 is: 85,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,390.40 : 144,058.32 = 61,983.84 : x
  2. Step 2: Convert to fraction form
    104,390.40/144,058.32 = 61,983.84/x
  3. Step 3: Cross multiply
    104,390.40x = 144,058.32 × 61,983.84
  4. Step 4: Simplify right side
    104,390.40x = 8,929,287,857.55
  5. Step 5: Solve for x
    x = 8,929,287,857.55/104,390.40
  6. Step 6: Final answer
    x = 85,537.44

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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.