Home / 53,445.40-80,168.10-20,613.40

Finding the Fourth Proportional to 53,445.40, 80,168.10 and 20,613.40

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Solution

The fourth proportional to 53,445.40, 80,168.10 and 20,613.40 is: 30,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,445.40 : 80,168.10 = 20,613.40 : x
  2. Step 2: Convert to fraction form
    53,445.40/80,168.10 = 20,613.40/x
  3. Step 3: Cross multiply
    53,445.40x = 80,168.10 × 20,613.40
  4. Step 4: Simplify right side
    53,445.40x = 1,652,537,112.54
  5. Step 5: Solve for x
    x = 1,652,537,112.54/53,445.40
  6. Step 6: Final answer
    x = 30,920.10

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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.