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Finding the Fourth Proportional to 55,957.60, 83,936.40 and 53,807.20

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Solution

The fourth proportional to 55,957.60, 83,936.40 and 53,807.20 is: 80,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,957.60 : 83,936.40 = 53,807.20 : x
  2. Step 2: Convert to fraction form
    55,957.60/83,936.40 = 53,807.20/x
  3. Step 3: Cross multiply
    55,957.60x = 83,936.40 × 53,807.20
  4. Step 4: Simplify right side
    55,957.60x = 4,516,382,662.08
  5. Step 5: Solve for x
    x = 4,516,382,662.08/55,957.60
  6. Step 6: Final answer
    x = 80,710.80

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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.