Home / 54,286.04-74,917.80-30,420.40

Finding the Fourth Proportional to 54,286.04, 74,917.80 and 30,420.40

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Solution

The fourth proportional to 54,286.04, 74,917.80 and 30,420.40 is: 41,981.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,286.04 : 74,917.80 = 30,420.40 : x
  2. Step 2: Convert to fraction form
    54,286.04/74,917.80 = 30,420.40/x
  3. Step 3: Cross multiply
    54,286.04x = 74,917.80 × 30,420.40
  4. Step 4: Simplify right side
    54,286.04x = 2,279,029,443.12
  5. Step 5: Solve for x
    x = 2,279,029,443.12/54,286.04
  6. Step 6: Final answer
    x = 41,981.87

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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.