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Finding the Fourth Proportional to 42,509,406.60, 63,764,109.90 and 16,954,360.20

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Solution

The fourth proportional to 42,509,406.60, 63,764,109.90 and 16,954,360.20 is: 25,431,540.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,509,406.60 : 63,764,109.90 = 16,954,360.20 : x
  2. Step 2: Convert to fraction form
    42,509,406.60/63,764,109.90 = 16,954,360.20/x
  3. Step 3: Cross multiply
    42,509,406.60x = 63,764,109.90 × 16,954,360.20
  4. Step 4: Simplify right side
    42,509,406.60x = 1,081,079,687,076,985.88
  5. Step 5: Solve for x
    x = 1,081,079,687,076,985.88/42,509,406.60
  6. Step 6: Final answer
    x = 25,431,540.30

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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.