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Finding the Fourth Proportional to 65,412,352.64, 90,264,978.68 and 36,042,041.60

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Solution

The fourth proportional to 65,412,352.64, 90,264,978.68 and 36,042,041.60 is: 49,735,775.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,412,352.64 : 90,264,978.68 = 36,042,041.60 : x
  2. Step 2: Convert to fraction form
    65,412,352.64/90,264,978.68 = 36,042,041.60/x
  3. Step 3: Cross multiply
    65,412,352.64x = 90,264,978.68 × 36,042,041.60
  4. Step 4: Simplify right side
    65,412,352.64x = 3,253,334,116,607,673.50
  5. Step 5: Solve for x
    x = 3,253,334,116,607,673.50/65,412,352.64
  6. Step 6: Final answer
    x = 49,735,775.97

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