Home / 54,613.20-81,919.80-19,556.40

Finding the Fourth Proportional to 54,613.20, 81,919.80 and 19,556.40

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Solution

The fourth proportional to 54,613.20, 81,919.80 and 19,556.40 is: 29,334.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,613.20 : 81,919.80 = 19,556.40 : x
  2. Step 2: Convert to fraction form
    54,613.20/81,919.80 = 19,556.40/x
  3. Step 3: Cross multiply
    54,613.20x = 81,919.80 × 19,556.40
  4. Step 4: Simplify right side
    54,613.20x = 1,602,056,376.72
  5. Step 5: Solve for x
    x = 1,602,056,376.72/54,613.20
  6. Step 6: Final answer
    x = 29,334.60

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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.