Home / 78,351,208.20-117,526,812.30-65,810,075.40

Finding the Fourth Proportional to 78,351,208.20, 117,526,812.30 and 65,810,075.40

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Solution

The fourth proportional to 78,351,208.20, 117,526,812.30 and 65,810,075.40 is: 98,715,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,351,208.20 : 117,526,812.30 = 65,810,075.40 : x
  2. Step 2: Convert to fraction form
    78,351,208.20/117,526,812.30 = 65,810,075.40/x
  3. Step 3: Cross multiply
    78,351,208.20x = 117,526,812.30 × 65,810,075.40
  4. Step 4: Simplify right side
    78,351,208.20x = 7,734,448,378,984,647
  5. Step 5: Solve for x
    x = 7,734,448,378,984,647/78,351,208.20
  6. Step 6: Final answer
    x = 98,715,113.10

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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.