Home / 84,669.96-127,021.68-28,507.80

Finding the Fourth Proportional to 84,669.96, 127,021.68 and 28,507.80

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Solution

The fourth proportional to 84,669.96, 127,021.68 and 28,507.80 is: 42,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,669.96 : 127,021.68 = 28,507.80 : x
  2. Step 2: Convert to fraction form
    84,669.96/127,021.68 = 28,507.80/x
  3. Step 3: Cross multiply
    84,669.96x = 127,021.68 × 28,507.80
  4. Step 4: Simplify right side
    84,669.96x = 3,621,108,649.10
  5. Step 5: Solve for x
    x = 3,621,108,649.10/84,669.96
  6. Step 6: Final answer
    x = 42,767.34

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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.