Home / 78,724.79-108,620.82-48,090.08

Finding the Fourth Proportional to 78,724.79, 108,620.82 and 48,090.08

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Solution

The fourth proportional to 78,724.79, 108,620.82 and 48,090.08 is: 66,352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.79 : 108,620.82 = 48,090.08 : x
  2. Step 2: Convert to fraction form
    78,724.79/108,620.82 = 48,090.08/x
  3. Step 3: Cross multiply
    78,724.79x = 108,620.82 × 48,090.08
  4. Step 4: Simplify right side
    78,724.79x = 5,223,583,923.47
  5. Step 5: Solve for x
    x = 5,223,583,923.47/78,724.79
  6. Step 6: Final answer
    x = 66,352.47

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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.