Home / 72,035,536.80-108,056,294.64-20,917,555.32

Finding the Fourth Proportional to 72,035,536.80, 108,056,294.64 and 20,917,555.32

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Solution

The fourth proportional to 72,035,536.80, 108,056,294.64 and 20,917,555.32 is: 31,377,201.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035,536.80 : 108,056,294.64 = 20,917,555.32 : x
  2. Step 2: Convert to fraction form
    72,035,536.80/108,056,294.64 = 20,917,555.32/x
  3. Step 3: Cross multiply
    72,035,536.80x = 108,056,294.64 × 20,917,555.32
  4. Step 4: Simplify right side
    72,035,536.80x = 2,260,273,520,806,419.50
  5. Step 5: Solve for x
    x = 2,260,273,520,806,419.50/72,035,536.80
  6. Step 6: Final answer
    x = 31,377,201.05

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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.