Home / 53,138.40-79,707.60-35,512.80

Finding the Fourth Proportional to 53,138.40, 79,707.60 and 35,512.80

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Solution

The fourth proportional to 53,138.40, 79,707.60 and 35,512.80 is: 53,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.40 : 79,707.60 = 35,512.80 : x
  2. Step 2: Convert to fraction form
    53,138.40/79,707.60 = 35,512.80/x
  3. Step 3: Cross multiply
    53,138.40x = 79,707.60 × 35,512.80
  4. Step 4: Simplify right side
    53,138.40x = 2,830,640,057.28
  5. Step 5: Solve for x
    x = 2,830,640,057.28/53,138.40
  6. Step 6: Final answer
    x = 53,269.20

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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.