Home / 30,619,019.60-45,928,529.40-12,431,927.60

Finding the Fourth Proportional to 30,619,019.60, 45,928,529.40 and 12,431,927.60

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Solution

The fourth proportional to 30,619,019.60, 45,928,529.40 and 12,431,927.60 is: 18,647,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619,019.60 : 45,928,529.40 = 12,431,927.60 : x
  2. Step 2: Convert to fraction form
    30,619,019.60/45,928,529.40 = 12,431,927.60/x
  3. Step 3: Cross multiply
    30,619,019.60x = 45,928,529.40 × 12,431,927.60
  4. Step 4: Simplify right side
    30,619,019.60x = 570,980,152,275,271.38
  5. Step 5: Solve for x
    x = 570,980,152,275,271.38/30,619,019.60
  6. Step 6: Final answer
    x = 18,647,891.40

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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.