Home / 77,271,760.40-115,907,640.60-69,209,603.60

Finding the Fourth Proportional to 77,271,760.40, 115,907,640.60 and 69,209,603.60

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Solution

The fourth proportional to 77,271,760.40, 115,907,640.60 and 69,209,603.60 is: 103,814,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,271,760.40 : 115,907,640.60 = 69,209,603.60 : x
  2. Step 2: Convert to fraction form
    77,271,760.40/115,907,640.60 = 69,209,603.60/x
  3. Step 3: Cross multiply
    77,271,760.40x = 115,907,640.60 × 69,209,603.60
  4. Step 4: Simplify right side
    77,271,760.40x = 8,021,921,860,137,265
  5. Step 5: Solve for x
    x = 8,021,921,860,137,265/77,271,760.40
  6. Step 6: Final answer
    x = 103,814,405.40

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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.