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Finding the Fourth Proportional to 78,893,224.37, 118,339,837.04 and 21,385,495.32

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Solution

The fourth proportional to 78,893,224.37, 118,339,837.04 and 21,385,495.32 is: 32,078,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,893,224.37 : 118,339,837.04 = 21,385,495.32 : x
  2. Step 2: Convert to fraction form
    78,893,224.37/118,339,837.04 = 21,385,495.32/x
  3. Step 3: Cross multiply
    78,893,224.37x = 118,339,837.04 × 21,385,495.32
  4. Step 4: Simplify right side
    78,893,224.37x = 2,530,756,031,188,483
  5. Step 5: Solve for x
    x = 2,530,756,031,188,483/78,893,224.37
  6. Step 6: Final answer
    x = 32,078,243.11

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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.