Home / 72,611,478.20-108,767,918.10-49,917,999.80

Finding the Fourth Proportional to 72,611,478.20, 108,767,918.10 and 49,917,999.80

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Solution

The fourth proportional to 72,611,478.20, 108,767,918.10 and 49,917,999.80 is: 74,774,361.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,611,478.20 : 108,767,918.10 = 49,917,999.80 : x
  2. Step 2: Convert to fraction form
    72,611,478.20/108,767,918.10 = 49,917,999.80/x
  3. Step 3: Cross multiply
    72,611,478.20x = 108,767,918.10 × 49,917,999.80
  4. Step 4: Simplify right side
    72,611,478.20x = 5,429,476,913,962,216
  5. Step 5: Solve for x
    x = 5,429,476,913,962,216/72,611,478.20
  6. Step 6: Final answer
    x = 74,774,361.42

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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.