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Finding the Fourth Proportional to 115,620, 159,555.60 and 62,628

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Solution

The fourth proportional to 115,620, 159,555.60 and 62,628 is: 86,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,620 : 159,555.60 = 62,628 : x
  2. Step 2: Convert to fraction form
    115,620/159,555.60 = 62,628/x
  3. Step 3: Cross multiply
    115,620x = 159,555.60 × 62,628
  4. Step 4: Simplify right side
    115,620x = 9,992,648,116.80
  5. Step 5: Solve for x
    x = 9,992,648,116.80/115,620
  6. Step 6: Final answer
    x = 86,426.64

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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.