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Finding the Fourth Proportional to 68,014,943.80, 102,022,415.70 and 65,369,548.60

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Solution

The fourth proportional to 68,014,943.80, 102,022,415.70 and 65,369,548.60 is: 98,054,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,014,943.80 : 102,022,415.70 = 65,369,548.60 : x
  2. Step 2: Convert to fraction form
    68,014,943.80/102,022,415.70 = 65,369,548.60/x
  3. Step 3: Cross multiply
    68,014,943.80x = 102,022,415.70 × 65,369,548.60
  4. Step 4: Simplify right side
    68,014,943.80x = 6,669,159,261,390,553
  5. Step 5: Solve for x
    x = 6,669,159,261,390,553/68,014,943.80
  6. Step 6: Final answer
    x = 98,054,322.90

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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.