Home / 53,707.21-80,560.85-20,419.58

Finding the Fourth Proportional to 53,707.21, 80,560.85 and 20,419.58

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Solution

The fourth proportional to 53,707.21, 80,560.85 and 20,419.58 is: 30,629.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,707.21 : 80,560.85 = 20,419.58 : x
  2. Step 2: Convert to fraction form
    53,707.21/80,560.85 = 20,419.58/x
  3. Step 3: Cross multiply
    53,707.21x = 80,560.85 × 20,419.58
  4. Step 4: Simplify right side
    53,707.21x = 1,645,018,820.75
  5. Step 5: Solve for x
    x = 1,645,018,820.75/53,707.21
  6. Step 6: Final answer
    x = 30,629.39

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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.