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Finding the Fourth Proportional to 55,776.60, 83,664.37 and 13,656.87

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Solution

The fourth proportional to 55,776.60, 83,664.37 and 13,656.87 is: 20,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,776.60 : 83,664.37 = 13,656.87 : x
  2. Step 2: Convert to fraction form
    55,776.60/83,664.37 = 13,656.87/x
  3. Step 3: Cross multiply
    55,776.60x = 83,664.37 × 13,656.87
  4. Step 4: Simplify right side
    55,776.60x = 1,142,593,424.72
  5. Step 5: Solve for x
    x = 1,142,593,424.72/55,776.60
  6. Step 6: Final answer
    x = 20,485.18

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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.