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Finding the Fourth Proportional to 68,263,313.80, 102,394,970.70 and 65,617,918.60

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Solution

The fourth proportional to 68,263,313.80, 102,394,970.70 and 65,617,918.60 is: 98,426,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,263,313.80 : 102,394,970.70 = 65,617,918.60 : x
  2. Step 2: Convert to fraction form
    68,263,313.80/102,394,970.70 = 65,617,918.60/x
  3. Step 3: Cross multiply
    68,263,313.80x = 102,394,970.70 × 65,617,918.60
  4. Step 4: Simplify right side
    68,263,313.80x = 6,718,944,852,441,985
  5. Step 5: Solve for x
    x = 6,718,944,852,441,985/68,263,313.80
  6. Step 6: Final answer
    x = 98,426,877.90

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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.