Home / 84,431.12-126,663-25,261.68

Finding the Fourth Proportional to 84,431.12, 126,663 and 25,261.68

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Solution

The fourth proportional to 84,431.12, 126,663 and 25,261.68 is: 37,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,431.12 : 126,663 = 25,261.68 : x
  2. Step 2: Convert to fraction form
    84,431.12/126,663 = 25,261.68/x
  3. Step 3: Cross multiply
    84,431.12x = 126,663 × 25,261.68
  4. Step 4: Simplify right side
    84,431.12x = 3,199,720,173.84
  5. Step 5: Solve for x
    x = 3,199,720,173.84/84,431.12
  6. Step 6: Final answer
    x = 37,897.40

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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.