Home / 78,809.28-108,740.96-50,140.32

Finding the Fourth Proportional to 78,809.28, 108,740.96 and 50,140.32

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Solution

The fourth proportional to 78,809.28, 108,740.96 and 50,140.32 is: 69,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.28 : 108,740.96 = 50,140.32 : x
  2. Step 2: Convert to fraction form
    78,809.28/108,740.96 = 50,140.32/x
  3. Step 3: Cross multiply
    78,809.28x = 108,740.96 × 50,140.32
  4. Step 4: Simplify right side
    78,809.28x = 5,452,306,531.51
  5. Step 5: Solve for x
    x = 5,452,306,531.51/78,809.28
  6. Step 6: Final answer
    x = 69,183.56

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1.5x scale

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.