Home / 30,510,923.11-42,080,711.48-20,067,660.50

Finding the Fourth Proportional to 30,510,923.11, 42,080,711.48 and 20,067,660.50

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Solution

The fourth proportional to 30,510,923.11, 42,080,711.48 and 20,067,660.50 is: 27,677,347.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,510,923.11 : 42,080,711.48 = 20,067,660.50 : x
  2. Step 2: Convert to fraction form
    30,510,923.11/42,080,711.48 = 20,067,660.50/x
  3. Step 3: Cross multiply
    30,510,923.11x = 42,080,711.48 × 20,067,660.50
  4. Step 4: Simplify right side
    30,510,923.11x = 844,461,431,400,054.88
  5. Step 5: Solve for x
    x = 844,461,431,400,054.88/30,510,923.11
  6. Step 6: Final answer
    x = 27,677,347.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.