Home / 81,590,664.69-122,309,054.93-40,611,359.88

Finding the Fourth Proportional to 81,590,664.69, 122,309,054.93 and 40,611,359.88

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Solution

The fourth proportional to 81,590,664.69, 122,309,054.93 and 40,611,359.88 is: 60,878,742.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,590,664.69 : 122,309,054.93 = 40,611,359.88 : x
  2. Step 2: Convert to fraction form
    81,590,664.69/122,309,054.93 = 40,611,359.88/x
  3. Step 3: Cross multiply
    81,590,664.69x = 122,309,054.93 × 40,611,359.88
  4. Step 4: Simplify right side
    81,590,664.69x = 4,967,137,046,446,447
  5. Step 5: Solve for x
    x = 4,967,137,046,446,447/81,590,664.69
  6. Step 6: Final answer
    x = 60,878,742.26

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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.