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Finding the Fourth Proportional to 55,698.80, 83,548.20 and 14,145.80

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Solution

The fourth proportional to 55,698.80, 83,548.20 and 14,145.80 is: 21,218.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,698.80 : 83,548.20 = 14,145.80 : x
  2. Step 2: Convert to fraction form
    55,698.80/83,548.20 = 14,145.80/x
  3. Step 3: Cross multiply
    55,698.80x = 83,548.20 × 14,145.80
  4. Step 4: Simplify right side
    55,698.80x = 1,181,856,127.56
  5. Step 5: Solve for x
    x = 1,181,856,127.56/55,698.80
  6. Step 6: Final answer
    x = 21,218.70

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1.5x scale

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.