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Finding the Fourth Proportional to 28,746,681.60, 43,141,017.60 and 20,243,625.60

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Solution

The fourth proportional to 28,746,681.60, 43,141,017.60 and 20,243,625.60 is: 30,380,223.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746,681.60 : 43,141,017.60 = 20,243,625.60 : x
  2. Step 2: Convert to fraction form
    28,746,681.60/43,141,017.60 = 20,243,625.60/x
  3. Step 3: Cross multiply
    28,746,681.60x = 43,141,017.60 × 20,243,625.60
  4. Step 4: Simplify right side
    28,746,681.60x = 873,330,608,297,410.62
  5. Step 5: Solve for x
    x = 873,330,608,297,410.62/28,746,681.60
  6. Step 6: Final answer
    x = 30,380,223.37

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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.