Home / 78,476.09-117,684.77-28,541.61

Finding the Fourth Proportional to 78,476.09, 117,684.77 and 28,541.61

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Solution

The fourth proportional to 78,476.09, 117,684.77 and 28,541.61 is: 42,801.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,476.09 : 117,684.77 = 28,541.61 : x
  2. Step 2: Convert to fraction form
    78,476.09/117,684.77 = 28,541.61/x
  3. Step 3: Cross multiply
    78,476.09x = 117,684.77 × 28,541.61
  4. Step 4: Simplify right side
    78,476.09x = 3,358,912,665.57
  5. Step 5: Solve for x
    x = 3,358,912,665.57/78,476.09
  6. Step 6: Final answer
    x = 42,801.74

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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.