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Finding the Fourth Proportional to 84,793,654.80, 127,190,482.20 and 20,968,246.80

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Solution

The fourth proportional to 84,793,654.80, 127,190,482.20 and 20,968,246.80 is: 31,452,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,793,654.80 : 127,190,482.20 = 20,968,246.80 : x
  2. Step 2: Convert to fraction form
    84,793,654.80/127,190,482.20 = 20,968,246.80/x
  3. Step 3: Cross multiply
    84,793,654.80x = 127,190,482.20 × 20,968,246.80
  4. Step 4: Simplify right side
    84,793,654.80x = 2,666,961,421,380,607
  5. Step 5: Solve for x
    x = 2,666,961,421,380,607/84,793,654.80
  6. Step 6: Final answer
    x = 31,452,370.20

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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.