Home / 78,913.05-108,902.63-43,106.40

Finding the Fourth Proportional to 78,913.05, 108,902.63 and 43,106.40

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Solution

The fourth proportional to 78,913.05, 108,902.63 and 43,106.40 is: 59,488.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.05 : 108,902.63 = 43,106.40 : x
  2. Step 2: Convert to fraction form
    78,913.05/108,902.63 = 43,106.40/x
  3. Step 3: Cross multiply
    78,913.05x = 108,902.63 × 43,106.40
  4. Step 4: Simplify right side
    78,913.05x = 4,694,400,114.30
  5. Step 5: Solve for x
    x = 4,694,400,114.30/78,913.05
  6. Step 6: Final answer
    x = 59,488.26

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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.