Home / 78,916.13-108,903.61-43,106.15

Finding the Fourth Proportional to 78,916.13, 108,903.61 and 43,106.15

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Solution

The fourth proportional to 78,916.13, 108,903.61 and 43,106.15 is: 59,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,916.13 : 108,903.61 = 43,106.15 : x
  2. Step 2: Convert to fraction form
    78,916.13/108,903.61 = 43,106.15/x
  3. Step 3: Cross multiply
    78,916.13x = 108,903.61 × 43,106.15
  4. Step 4: Simplify right side
    78,916.13x = 4,694,414,588.15
  5. Step 5: Solve for x
    x = 4,694,414,588.15/78,916.13
  6. Step 6: Final answer
    x = 59,486.13

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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.