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Finding the Fourth Proportional to 49,987.27, 74,980.89 and 20,015.00

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Solution

The fourth proportional to 49,987.27, 74,980.89 and 20,015.00 is: 30,022.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,987.27 : 74,980.89 = 20,015.00 : x
  2. Step 2: Convert to fraction form
    49,987.27/74,980.89 = 20,015.00/x
  3. Step 3: Cross multiply
    49,987.27x = 74,980.89 × 20,015.00
  4. Step 4: Simplify right side
    49,987.27x = 1,500,742,138.45
  5. Step 5: Solve for x
    x = 1,500,742,138.45/49,987.27
  6. Step 6: Final answer
    x = 30,022.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.