Home / 84,578.26-126,881.98-28,423.76

Finding the Fourth Proportional to 84,578.26, 126,881.98 and 28,423.76

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Solution

The fourth proportional to 84,578.26, 126,881.98 and 28,423.76 is: 42,640.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,578.26 : 126,881.98 = 28,423.76 : x
  2. Step 2: Convert to fraction form
    84,578.26/126,881.98 = 28,423.76/x
  3. Step 3: Cross multiply
    84,578.26x = 126,881.98 × 28,423.76
  4. Step 4: Simplify right side
    84,578.26x = 3,606,462,947.84
  5. Step 5: Solve for x
    x = 3,606,462,947.84/84,578.26
  6. Step 6: Final answer
    x = 42,640.54

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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.