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Finding the Fourth Proportional to 55,658.63, 83,479.87 and 18,220.19

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Solution

The fourth proportional to 55,658.63, 83,479.87 and 18,220.19 is: 27,327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,658.63 : 83,479.87 = 18,220.19 : x
  2. Step 2: Convert to fraction form
    55,658.63/83,479.87 = 18,220.19/x
  3. Step 3: Cross multiply
    55,658.63x = 83,479.87 × 18,220.19
  4. Step 4: Simplify right side
    55,658.63x = 1,521,018,983.98
  5. Step 5: Solve for x
    x = 1,521,018,983.98/55,658.63
  6. Step 6: Final answer
    x = 27,327.64

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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.