Home / 40,076,919.36-55,306,168.74-21,742,200

Finding the Fourth Proportional to 40,076,919.36, 55,306,168.74 and 21,742,200

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Solution

The fourth proportional to 40,076,919.36, 55,306,168.74 and 21,742,200 is: 30,004,246.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,076,919.36 : 55,306,168.74 = 21,742,200 : x
  2. Step 2: Convert to fraction form
    40,076,919.36/55,306,168.74 = 21,742,200/x
  3. Step 3: Cross multiply
    40,076,919.36x = 55,306,168.74 × 21,742,200
  4. Step 4: Simplify right side
    40,076,919.36x = 1,202,477,781,978,828
  5. Step 5: Solve for x
    x = 1,202,477,781,978,828/40,076,919.36
  6. Step 6: Final answer
    x = 30,004,246.86

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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.