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Finding the Fourth Proportional to 28,978,645.60, 43,467,968.40 and 13,862,101.60

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Solution

The fourth proportional to 28,978,645.60, 43,467,968.40 and 13,862,101.60 is: 20,793,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,645.60 : 43,467,968.40 = 13,862,101.60 : x
  2. Step 2: Convert to fraction form
    28,978,645.60/43,467,968.40 = 13,862,101.60/x
  3. Step 3: Cross multiply
    28,978,645.60x = 43,467,968.40 × 13,862,101.60
  4. Step 4: Simplify right side
    28,978,645.60x = 602,557,394,306,389.38
  5. Step 5: Solve for x
    x = 602,557,394,306,389.38/28,978,645.60
  6. Step 6: Final answer
    x = 20,793,152.40

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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.