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Finding the Fourth Proportional to 65,361,208.80, 98,041,813.20 and 39,852,040.80

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Solution

The fourth proportional to 65,361,208.80, 98,041,813.20 and 39,852,040.80 is: 59,778,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,361,208.80 : 98,041,813.20 = 39,852,040.80 : x
  2. Step 2: Convert to fraction form
    65,361,208.80/98,041,813.20 = 39,852,040.80/x
  3. Step 3: Cross multiply
    65,361,208.80x = 98,041,813.20 × 39,852,040.80
  4. Step 4: Simplify right side
    65,361,208.80x = 3,907,166,339,752,378.50
  5. Step 5: Solve for x
    x = 3,907,166,339,752,378.50/65,361,208.80
  6. Step 6: Final answer
    x = 59,778,061.20

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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.