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Finding the Fourth Proportional to 53,428,807.80, 80,143,211.70 and 50,452,738.20

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Solution

The fourth proportional to 53,428,807.80, 80,143,211.70 and 50,452,738.20 is: 75,679,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,428,807.80 : 80,143,211.70 = 50,452,738.20 : x
  2. Step 2: Convert to fraction form
    53,428,807.80/80,143,211.70 = 50,452,738.20/x
  3. Step 3: Cross multiply
    53,428,807.80x = 80,143,211.70 × 50,452,738.20
  4. Step 4: Simplify right side
    53,428,807.80x = 4,043,444,478,407,277.50
  5. Step 5: Solve for x
    x = 4,043,444,478,407,277.50/53,428,807.80
  6. Step 6: Final answer
    x = 75,679,107.30

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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.