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Finding the Fourth Proportional to 55,776.60, 83,664.36 and 13,656.88

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Solution

The fourth proportional to 55,776.60, 83,664.36 and 13,656.88 is: 20,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,776.60 : 83,664.36 = 13,656.88 : x
  2. Step 2: Convert to fraction form
    55,776.60/83,664.36 = 13,656.88/x
  3. Step 3: Cross multiply
    55,776.60x = 83,664.36 × 13,656.88
  4. Step 4: Simplify right side
    55,776.60x = 1,142,594,124.80
  5. Step 5: Solve for x
    x = 1,142,594,124.80/55,776.60
  6. Step 6: Final answer
    x = 20,485.19

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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.