Home / 53,403.40-80,105.10-51,128.20

Finding the Fourth Proportional to 53,403.40, 80,105.10 and 51,128.20

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Solution

The fourth proportional to 53,403.40, 80,105.10 and 51,128.20 is: 76,692.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,403.40 : 80,105.10 = 51,128.20 : x
  2. Step 2: Convert to fraction form
    53,403.40/80,105.10 = 51,128.20/x
  3. Step 3: Cross multiply
    53,403.40x = 80,105.10 × 51,128.20
  4. Step 4: Simplify right side
    53,403.40x = 4,095,629,573.82
  5. Step 5: Solve for x
    x = 4,095,629,573.82/53,403.40
  6. Step 6: Final answer
    x = 76,692.30

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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.