Home / 7,881,325.20-11,821,987.80-3,087,421.20

Finding the Fourth Proportional to 7,881,325.20, 11,821,987.80 and 3,087,421.20

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Solution

The fourth proportional to 7,881,325.20, 11,821,987.80 and 3,087,421.20 is: 4,631,131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881,325.20 : 11,821,987.80 = 3,087,421.20 : x
  2. Step 2: Convert to fraction form
    7,881,325.20/11,821,987.80 = 3,087,421.20/x
  3. Step 3: Cross multiply
    7,881,325.20x = 11,821,987.80 × 3,087,421.20
  4. Step 4: Simplify right side
    7,881,325.20x = 36,499,455,759,861.37
  5. Step 5: Solve for x
    x = 36,499,455,759,861.37/7,881,325.20
  6. Step 6: Final answer
    x = 4,631,131.80

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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.