Home / 105,261.21-145,261.49-57,514.55

Finding the Fourth Proportional to 105,261.21, 145,261.49 and 57,514.55

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Solution

The fourth proportional to 105,261.21, 145,261.49 and 57,514.55 is: 79,370.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,261.21 : 145,261.49 = 57,514.55 : x
  2. Step 2: Convert to fraction form
    105,261.21/145,261.49 = 57,514.55/x
  3. Step 3: Cross multiply
    105,261.21x = 145,261.49 × 57,514.55
  4. Step 4: Simplify right side
    105,261.21x = 8,354,649,305.26
  5. Step 5: Solve for x
    x = 8,354,649,305.26/105,261.21
  6. Step 6: Final answer
    x = 79,370.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.