Home / 53,009.20-79,513.80-38,321.20

Finding the Fourth Proportional to 53,009.20, 79,513.80 and 38,321.20

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Solution

The fourth proportional to 53,009.20, 79,513.80 and 38,321.20 is: 57,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,009.20 : 79,513.80 = 38,321.20 : x
  2. Step 2: Convert to fraction form
    53,009.20/79,513.80 = 38,321.20/x
  3. Step 3: Cross multiply
    53,009.20x = 79,513.80 × 38,321.20
  4. Step 4: Simplify right side
    53,009.20x = 3,047,064,232.56
  5. Step 5: Solve for x
    x = 3,047,064,232.56/53,009.20
  6. Step 6: Final answer
    x = 57,481.80

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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.