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Finding the Fourth Proportional to 69,702,489.60, 104,553,734.40 and 66,567,206.40

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Solution

The fourth proportional to 69,702,489.60, 104,553,734.40 and 66,567,206.40 is: 99,850,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,702,489.60 : 104,553,734.40 = 66,567,206.40 : x
  2. Step 2: Convert to fraction form
    69,702,489.60/104,553,734.40 = 66,567,206.40/x
  3. Step 3: Cross multiply
    69,702,489.60x = 104,553,734.40 × 66,567,206.40
  4. Step 4: Simplify right side
    69,702,489.60x = 6,959,850,017,695,580
  5. Step 5: Solve for x
    x = 6,959,850,017,695,580/69,702,489.60
  6. Step 6: Final answer
    x = 99,850,809.60

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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.