Home / 90,763,954.60-136,128,217.20-30,179,680.60

Finding the Fourth Proportional to 90,763,954.60, 136,128,217.20 and 30,179,680.60

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Solution

The fourth proportional to 90,763,954.60, 136,128,217.20 and 30,179,680.60 is: 45,263,630.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,763,954.60 : 136,128,217.20 = 30,179,680.60 : x
  2. Step 2: Convert to fraction form
    90,763,954.60/136,128,217.20 = 30,179,680.60/x
  3. Step 3: Cross multiply
    90,763,954.60x = 136,128,217.20 × 30,179,680.60
  4. Step 4: Simplify right side
    90,763,954.60x = 4,108,306,115,743,426
  5. Step 5: Solve for x
    x = 4,108,306,115,743,426/90,763,954.60
  6. Step 6: Final answer
    x = 45,263,630.63

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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.