Home / 78,628.20-108,543.69-50,350.02

Finding the Fourth Proportional to 78,628.20, 108,543.69 and 50,350.02

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Solution

The fourth proportional to 78,628.20, 108,543.69 and 50,350.02 is: 69,506.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,628.20 : 108,543.69 = 50,350.02 : x
  2. Step 2: Convert to fraction form
    78,628.20/108,543.69 = 50,350.02/x
  3. Step 3: Cross multiply
    78,628.20x = 108,543.69 × 50,350.02
  4. Step 4: Simplify right side
    78,628.20x = 5,465,176,962.37
  5. Step 5: Solve for x
    x = 5,465,176,962.37/78,628.20
  6. Step 6: Final answer
    x = 69,506.58

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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.