Home / 78,413,336.79-117,604,504.81-74,524,664.89

Finding the Fourth Proportional to 78,413,336.79, 117,604,504.81 and 74,524,664.89

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Solution

The fourth proportional to 78,413,336.79, 117,604,504.81 and 74,524,664.89 is: 111,772,265.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,413,336.79 : 117,604,504.81 = 74,524,664.89 : x
  2. Step 2: Convert to fraction form
    78,413,336.79/117,604,504.81 = 74,524,664.89/x
  3. Step 3: Cross multiply
    78,413,336.79x = 117,604,504.81 × 74,524,664.89
  4. Step 4: Simplify right side
    78,413,336.79x = 8,764,436,310,519,643
  5. Step 5: Solve for x
    x = 8,764,436,310,519,643/78,413,336.79
  6. Step 6: Final answer
    x = 111,772,265.65

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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.