Home / 78,243,520.20-117,365,280.30-49,522,086.60

Finding the Fourth Proportional to 78,243,520.20, 117,365,280.30 and 49,522,086.60

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Solution

The fourth proportional to 78,243,520.20, 117,365,280.30 and 49,522,086.60 is: 74,283,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,243,520.20 : 117,365,280.30 = 49,522,086.60 : x
  2. Step 2: Convert to fraction form
    78,243,520.20/117,365,280.30 = 49,522,086.60/x
  3. Step 3: Cross multiply
    78,243,520.20x = 117,365,280.30 × 49,522,086.60
  4. Step 4: Simplify right side
    78,243,520.20x = 5,812,173,574,849,874
  5. Step 5: Solve for x
    x = 5,812,173,574,849,874/78,243,520.20
  6. Step 6: Final answer
    x = 74,283,129.90

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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.