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Finding the Fourth Proportional to 28,902,938.40, 43,340,410.80 and 16,109,863.20

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Solution

The fourth proportional to 28,902,938.40, 43,340,410.80 and 16,109,863.20 is: 24,156,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902,938.40 : 43,340,410.80 = 16,109,863.20 : x
  2. Step 2: Convert to fraction form
    28,902,938.40/43,340,410.80 = 16,109,863.20/x
  3. Step 3: Cross multiply
    28,902,938.40x = 43,340,410.80 × 16,109,863.20
  4. Step 4: Simplify right side
    28,902,938.40x = 698,208,089,019,802.50
  5. Step 5: Solve for x
    x = 698,208,089,019,802.50/28,902,938.40
  6. Step 6: Final answer
    x = 24,156,993.29

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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.