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Finding the Fourth Proportional to 53,190.90, 79,786.61 and 15,751.68

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Solution

The fourth proportional to 53,190.90, 79,786.61 and 15,751.68 is: 23,627.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,190.90 : 79,786.61 = 15,751.68 : x
  2. Step 2: Convert to fraction form
    53,190.90/79,786.61 = 15,751.68/x
  3. Step 3: Cross multiply
    53,190.90x = 79,786.61 × 15,751.68
  4. Step 4: Simplify right side
    53,190.90x = 1,256,772,671.31
  5. Step 5: Solve for x
    x = 1,256,772,671.31/53,190.90
  6. Step 6: Final answer
    x = 23,627.59

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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.