Home / 72,068,461.19-108,121,126.13-20,950,480.01

Finding the Fourth Proportional to 72,068,461.19, 108,121,126.13 and 20,950,480.01

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Solution

The fourth proportional to 72,068,461.19, 108,121,126.13 and 20,950,480.01 is: 31,431,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,068,461.19 : 108,121,126.13 = 20,950,480.01 : x
  2. Step 2: Convert to fraction form
    72,068,461.19/108,121,126.13 = 20,950,480.01/x
  3. Step 3: Cross multiply
    72,068,461.19x = 108,121,126.13 × 20,950,480.01
  4. Step 4: Simplify right side
    72,068,461.19x = 2,265,189,491,399,138.50
  5. Step 5: Solve for x
    x = 2,265,189,491,399,138.50/72,068,461.19
  6. Step 6: Final answer
    x = 31,431,078.92

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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.