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Finding the Fourth Proportional to 55,433.99, 83,135.78 and 19,888.73

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Solution

The fourth proportional to 55,433.99, 83,135.78 and 19,888.73 is: 29,827.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,433.99 : 83,135.78 = 19,888.73 : x
  2. Step 2: Convert to fraction form
    55,433.99/83,135.78 = 19,888.73/x
  3. Step 3: Cross multiply
    55,433.99x = 83,135.78 × 19,888.73
  4. Step 4: Simplify right side
    55,433.99x = 1,653,465,081.76
  5. Step 5: Solve for x
    x = 1,653,465,081.76/55,433.99
  6. Step 6: Final answer
    x = 29,827.64

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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.