Home / 84,569.84-126,845.04-28,407.68

Finding the Fourth Proportional to 84,569.84, 126,845.04 and 28,407.68

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Solution

The fourth proportional to 84,569.84, 126,845.04 and 28,407.68 is: 42,608.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,569.84 : 126,845.04 = 28,407.68 : x
  2. Step 2: Convert to fraction form
    84,569.84/126,845.04 = 28,407.68/x
  3. Step 3: Cross multiply
    84,569.84x = 126,845.04 × 28,407.68
  4. Step 4: Simplify right side
    84,569.84x = 3,603,373,305.91
  5. Step 5: Solve for x
    x = 3,603,373,305.91/84,569.84
  6. Step 6: Final answer
    x = 42,608.25

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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.