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Finding the Fourth Proportional to 55,886.20, 83,826.90 and 18,950.20

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Solution

The fourth proportional to 55,886.20, 83,826.90 and 18,950.20 is: 28,424.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,886.20 : 83,826.90 = 18,950.20 : x
  2. Step 2: Convert to fraction form
    55,886.20/83,826.90 = 18,950.20/x
  3. Step 3: Cross multiply
    55,886.20x = 83,826.90 × 18,950.20
  4. Step 4: Simplify right side
    55,886.20x = 1,588,536,520.38
  5. Step 5: Solve for x
    x = 1,588,536,520.38/55,886.20
  6. Step 6: Final answer
    x = 28,424.49

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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.