Home / 38,860,495.75-53,627,743.40-21,219,520.80

Finding the Fourth Proportional to 38,860,495.75, 53,627,743.40 and 21,219,520.80

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Solution

The fourth proportional to 38,860,495.75, 53,627,743.40 and 21,219,520.80 is: 29,283,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,860,495.75 : 53,627,743.40 = 21,219,520.80 : x
  2. Step 2: Convert to fraction form
    38,860,495.75/53,627,743.40 = 21,219,520.80/x
  3. Step 3: Cross multiply
    38,860,495.75x = 53,627,743.40 × 21,219,520.80
  4. Step 4: Simplify right side
    38,860,495.75x = 1,137,955,016,533,362.75
  5. Step 5: Solve for x
    x = 1,137,955,016,533,362.75/38,860,495.75
  6. Step 6: Final answer
    x = 29,283,080.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.