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Finding the Fourth Proportional to 53,485.78, 80,202.68 and 26,820.32

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Solution

The fourth proportional to 53,485.78, 80,202.68 and 26,820.32 is: 40,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,485.78 : 80,202.68 = 26,820.32 : x
  2. Step 2: Convert to fraction form
    53,485.78/80,202.68 = 26,820.32/x
  3. Step 3: Cross multiply
    53,485.78x = 80,202.68 × 26,820.32
  4. Step 4: Simplify right side
    53,485.78x = 2,151,061,542.46
  5. Step 5: Solve for x
    x = 2,151,061,542.46/53,485.78
  6. Step 6: Final answer
    x = 40,217.45

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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.