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Finding the Fourth Proportional to 53,707.60, 80,647.80 and 39,019.60

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Solution

The fourth proportional to 53,707.60, 80,647.80 and 39,019.60 is: 58,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,707.60 : 80,647.80 = 39,019.60 : x
  2. Step 2: Convert to fraction form
    53,707.60/80,647.80 = 39,019.60/x
  3. Step 3: Cross multiply
    53,707.60x = 80,647.80 × 39,019.60
  4. Step 4: Simplify right side
    53,707.60x = 3,146,844,896.88
  5. Step 5: Solve for x
    x = 3,146,844,896.88/53,707.60
  6. Step 6: Final answer
    x = 58,592.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.