Home / 90,990,067.20-136,485,100.80-56,552,690.40

Finding the Fourth Proportional to 90,990,067.20, 136,485,100.80 and 56,552,690.40

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Solution

The fourth proportional to 90,990,067.20, 136,485,100.80 and 56,552,690.40 is: 84,829,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,990,067.20 : 136,485,100.80 = 56,552,690.40 : x
  2. Step 2: Convert to fraction form
    90,990,067.20/136,485,100.80 = 56,552,690.40/x
  3. Step 3: Cross multiply
    90,990,067.20x = 136,485,100.80 × 56,552,690.40
  4. Step 4: Simplify right side
    90,990,067.20x = 7,718,599,649,755,193
  5. Step 5: Solve for x
    x = 7,718,599,649,755,193/90,990,067.20
  6. Step 6: Final answer
    x = 84,829,035.60

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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.