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Finding the Fourth Proportional to 54,452,690.40, 81,710,528.40 and 20,377,480.80

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Solution

The fourth proportional to 54,452,690.40, 81,710,528.40 and 20,377,480.80 is: 30,578,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,452,690.40 : 81,710,528.40 = 20,377,480.80 : x
  2. Step 2: Convert to fraction form
    54,452,690.40/81,710,528.40 = 20,377,480.80/x
  3. Step 3: Cross multiply
    54,452,690.40x = 81,710,528.40 × 20,377,480.80
  4. Step 4: Simplify right side
    54,452,690.40x = 1,665,054,723,628,855
  5. Step 5: Solve for x
    x = 1,665,054,723,628,855/54,452,690.40
  6. Step 6: Final answer
    x = 30,578,006.55

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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.