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Finding the Fourth Proportional to 57,468,703.80, 86,203,055.70 and 40,250,015.40

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Solution

The fourth proportional to 57,468,703.80, 86,203,055.70 and 40,250,015.40 is: 60,375,023.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,468,703.80 : 86,203,055.70 = 40,250,015.40 : x
  2. Step 2: Convert to fraction form
    57,468,703.80/86,203,055.70 = 40,250,015.40/x
  3. Step 3: Cross multiply
    57,468,703.80x = 86,203,055.70 × 40,250,015.40
  4. Step 4: Simplify right side
    57,468,703.80x = 3,469,674,319,452,058
  5. Step 5: Solve for x
    x = 3,469,674,319,452,058/57,468,703.80
  6. Step 6: Final answer
    x = 60,375,023.10

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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.