Home / 83,886,912.72-115,736,254.92-68,390,355.60

Finding the Fourth Proportional to 83,886,912.72, 115,736,254.92 and 68,390,355.60

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Solution

The fourth proportional to 83,886,912.72, 115,736,254.92 and 68,390,355.60 is: 94,356,120.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,886,912.72 : 115,736,254.92 = 68,390,355.60 : x
  2. Step 2: Convert to fraction form
    83,886,912.72/115,736,254.92 = 68,390,355.60/x
  3. Step 3: Cross multiply
    83,886,912.72x = 115,736,254.92 × 68,390,355.60
  4. Step 4: Simplify right side
    83,886,912.72x = 7,915,243,629,791,049
  5. Step 5: Solve for x
    x = 7,915,243,629,791,049/83,886,912.72
  6. Step 6: Final answer
    x = 94,356,120.32

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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.