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Finding the Fourth Proportional to 103,580.51, 142,945.36 and 58,260.60

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Solution

The fourth proportional to 103,580.51, 142,945.36 and 58,260.60 is: 80,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,580.51 : 142,945.36 = 58,260.60 : x
  2. Step 2: Convert to fraction form
    103,580.51/142,945.36 = 58,260.60/x
  3. Step 3: Cross multiply
    103,580.51x = 142,945.36 × 58,260.60
  4. Step 4: Simplify right side
    103,580.51x = 8,328,082,295.16
  5. Step 5: Solve for x
    x = 8,328,082,295.16/103,580.51
  6. Step 6: Final answer
    x = 80,402.02

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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.