Home / 81,630,351.60-112,645,632.60-50,689,857.12

Finding the Fourth Proportional to 81,630,351.60, 112,645,632.60 and 50,689,857.12

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Solution

The fourth proportional to 81,630,351.60, 112,645,632.60 and 50,689,857.12 is: 69,949,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,630,351.60 : 112,645,632.60 = 50,689,857.12 : x
  2. Step 2: Convert to fraction form
    81,630,351.60/112,645,632.60 = 50,689,857.12/x
  3. Step 3: Cross multiply
    81,630,351.60x = 112,645,632.60 × 50,689,857.12
  4. Step 4: Simplify right side
    81,630,351.60x = 5,709,991,021,686,014
  5. Step 5: Solve for x
    x = 5,709,991,021,686,014/81,630,351.60
  6. Step 6: Final answer
    x = 69,949,362.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.