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Finding the Fourth Proportional to 60,490,846.60, 90,736,269.90 and 20,101,330.60

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Solution

The fourth proportional to 60,490,846.60, 90,736,269.90 and 20,101,330.60 is: 30,151,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,490,846.60 : 90,736,269.90 = 20,101,330.60 : x
  2. Step 2: Convert to fraction form
    60,490,846.60/90,736,269.90 = 20,101,330.60/x
  3. Step 3: Cross multiply
    60,490,846.60x = 90,736,269.90 × 20,101,330.60
  4. Step 4: Simplify right side
    60,490,846.60x = 1,823,919,758,670,729.25
  5. Step 5: Solve for x
    x = 1,823,919,758,670,729.25/60,490,846.60
  6. Step 6: Final answer
    x = 30,151,995.90

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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.