Home / 78,916.75-108,904.47-43,106.77

Finding the Fourth Proportional to 78,916.75, 108,904.47 and 43,106.77

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Solution

The fourth proportional to 78,916.75, 108,904.47 and 43,106.77 is: 59,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,916.75 : 108,904.47 = 43,106.77 : x
  2. Step 2: Convert to fraction form
    78,916.75/108,904.47 = 43,106.77/x
  3. Step 3: Cross multiply
    78,916.75x = 108,904.47 × 43,106.77
  4. Step 4: Simplify right side
    78,916.75x = 4,694,519,940.26
  5. Step 5: Solve for x
    x = 4,694,519,940.26/78,916.75
  6. Step 6: Final answer
    x = 59,486.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.