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Finding the Fourth Proportional to 53,485.80, 80,163.90 and 23,872.20

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Solution

The fourth proportional to 53,485.80, 80,163.90 and 23,872.20 is: 35,779.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,485.80 : 80,163.90 = 23,872.20 : x
  2. Step 2: Convert to fraction form
    53,485.80/80,163.90 = 23,872.20/x
  3. Step 3: Cross multiply
    53,485.80x = 80,163.90 × 23,872.20
  4. Step 4: Simplify right side
    53,485.80x = 1,913,688,653.58
  5. Step 5: Solve for x
    x = 1,913,688,653.58/53,485.80
  6. Step 6: Final answer
    x = 35,779.38

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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.