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Finding the Fourth Proportional to 76,626,092.20, 114,939,138.30 and 40,220,415.40

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Solution

The fourth proportional to 76,626,092.20, 114,939,138.30 and 40,220,415.40 is: 60,330,623.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,626,092.20 : 114,939,138.30 = 40,220,415.40 : x
  2. Step 2: Convert to fraction form
    76,626,092.20/114,939,138.30 = 40,220,415.40/x
  3. Step 3: Cross multiply
    76,626,092.20x = 114,939,138.30 × 40,220,415.40
  4. Step 4: Simplify right side
    76,626,092.20x = 4,622,899,888,144,050
  5. Step 5: Solve for x
    x = 4,622,899,888,144,050/76,626,092.20
  6. Step 6: Final answer
    x = 60,330,623.10

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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.