Home / 42,585,578.40-63,855,039.60-20,972,652.96

Finding the Fourth Proportional to 42,585,578.40, 63,855,039.60 and 20,972,652.96

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Solution

The fourth proportional to 42,585,578.40, 63,855,039.60 and 20,972,652.96 is: 31,447,490.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,585,578.40 : 63,855,039.60 = 20,972,652.96 : x
  2. Step 2: Convert to fraction form
    42,585,578.40/63,855,039.60 = 20,972,652.96/x
  3. Step 3: Cross multiply
    42,585,578.40x = 63,855,039.60 × 20,972,652.96
  4. Step 4: Simplify right side
    42,585,578.40x = 1,339,209,585,277,857.25
  5. Step 5: Solve for x
    x = 1,339,209,585,277,857.25/42,585,578.40
  6. Step 6: Final answer
    x = 31,447,490.81

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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.