Home / 84,580.25-126,872.43-28,421.17

Finding the Fourth Proportional to 84,580.25, 126,872.43 and 28,421.17

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Solution

The fourth proportional to 84,580.25, 126,872.43 and 28,421.17 is: 42,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,580.25 : 126,872.43 = 28,421.17 : x
  2. Step 2: Convert to fraction form
    84,580.25/126,872.43 = 28,421.17/x
  3. Step 3: Cross multiply
    84,580.25x = 126,872.43 × 28,421.17
  4. Step 4: Simplify right side
    84,580.25x = 3,605,862,477.58
  5. Step 5: Solve for x
    x = 3,605,862,477.58/84,580.25
  6. Step 6: Final answer
    x = 42,632.44

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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.