Home / 78,939,775.53-117,831,477.43-69,620,957.60

Finding the Fourth Proportional to 78,939,775.53, 117,831,477.43 and 69,620,957.60

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Solution

The fourth proportional to 78,939,775.53, 117,831,477.43 and 69,620,957.60 is: 103,921,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,939,775.53 : 117,831,477.43 = 69,620,957.60 : x
  2. Step 2: Convert to fraction form
    78,939,775.53/117,831,477.43 = 69,620,957.60/x
  3. Step 3: Cross multiply
    78,939,775.53x = 117,831,477.43 × 69,620,957.60
  4. Step 4: Simplify right side
    78,939,775.53x = 8,203,540,293,597,256
  5. Step 5: Solve for x
    x = 8,203,540,293,597,256/78,939,775.53
  6. Step 6: Final answer
    x = 103,921,505.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.