Home / 30,561,403.40-42,145,903.94-20,088,919.88

Finding the Fourth Proportional to 30,561,403.40, 42,145,903.94 and 20,088,919.88

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Solution

The fourth proportional to 30,561,403.40, 42,145,903.94 and 20,088,919.88 is: 27,703,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561,403.40 : 42,145,903.94 = 20,088,919.88 : x
  2. Step 2: Convert to fraction form
    30,561,403.40/42,145,903.94 = 20,088,919.88/x
  3. Step 3: Cross multiply
    30,561,403.40x = 42,145,903.94 × 20,088,919.88
  4. Step 4: Simplify right side
    30,561,403.40x = 846,665,687,520,836.25
  5. Step 5: Solve for x
    x = 846,665,687,520,836.25/30,561,403.40
  6. Step 6: Final answer
    x = 27,703,756.81

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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.