Home / 30,561,404.40-42,145,905.32-20,088,920.88

Finding the Fourth Proportional to 30,561,404.40, 42,145,905.32 and 20,088,920.88

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Solution

The fourth proportional to 30,561,404.40, 42,145,905.32 and 20,088,920.88 is: 27,703,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,561,404.40 : 42,145,905.32 = 20,088,920.88 : x
  2. Step 2: Convert to fraction form
    30,561,404.40/42,145,905.32 = 20,088,920.88/x
  3. Step 3: Cross multiply
    30,561,404.40x = 42,145,905.32 × 20,088,920.88
  4. Step 4: Simplify right side
    30,561,404.40x = 846,665,757,389,451
  5. Step 5: Solve for x
    x = 846,665,757,389,451/30,561,404.40
  6. Step 6: Final answer
    x = 27,703,758.19

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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.