Home / 68,905,921.92-103,353,459.12-30,043,456.80

Finding the Fourth Proportional to 68,905,921.92, 103,353,459.12 and 30,043,456.80

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Solution

The fourth proportional to 68,905,921.92, 103,353,459.12 and 30,043,456.80 is: 45,062,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,905,921.92 : 103,353,459.12 = 30,043,456.80 : x
  2. Step 2: Convert to fraction form
    68,905,921.92/103,353,459.12 = 30,043,456.80/x
  3. Step 3: Cross multiply
    68,905,921.92x = 103,353,459.12 × 30,043,456.80
  4. Step 4: Simplify right side
    68,905,921.92x = 3,105,095,184,202,286
  5. Step 5: Solve for x
    x = 3,105,095,184,202,286/68,905,921.92
  6. Step 6: Final answer
    x = 45,062,820.40

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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.