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Finding the Fourth Proportional to 65,383,718.40, 98,096,572.80 and 28,978,041.60

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Solution

The fourth proportional to 65,383,718.40, 98,096,572.80 and 28,978,041.60 is: 43,476,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,383,718.40 : 98,096,572.80 = 28,978,041.60 : x
  2. Step 2: Convert to fraction form
    65,383,718.40/98,096,572.80 = 28,978,041.60/x
  3. Step 3: Cross multiply
    65,383,718.40x = 98,096,572.80 × 28,978,041.60
  4. Step 4: Simplify right side
    65,383,718.40x = 2,842,646,567,415,828.50
  5. Step 5: Solve for x
    x = 2,842,646,567,415,828.50/65,383,718.40
  6. Step 6: Final answer
    x = 43,476,367.47

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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.