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Finding the Fourth Proportional to 103,485.38, 142,809.95 and 58,773.38

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Solution

The fourth proportional to 103,485.38, 142,809.95 and 58,773.38 is: 81,107.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,485.38 : 142,809.95 = 58,773.38 : x
  2. Step 2: Convert to fraction form
    103,485.38/142,809.95 = 58,773.38/x
  3. Step 3: Cross multiply
    103,485.38x = 142,809.95 × 58,773.38
  4. Step 4: Simplify right side
    103,485.38x = 8,393,422,892.01
  5. Step 5: Solve for x
    x = 8,393,422,892.01/103,485.38
  6. Step 6: Final answer
    x = 81,107.33

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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.