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Finding the Fourth Proportional to 43,066.09, 64,604 and 19,686.25

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Solution

The fourth proportional to 43,066.09, 64,604 and 19,686.25 is: 29,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,066.09 : 64,604 = 19,686.25 : x
  2. Step 2: Convert to fraction form
    43,066.09/64,604 = 19,686.25/x
  3. Step 3: Cross multiply
    43,066.09x = 64,604 × 19,686.25
  4. Step 4: Simplify right side
    43,066.09x = 1,271,810,495
  5. Step 5: Solve for x
    x = 1,271,810,495/43,066.09
  6. Step 6: Final answer
    x = 29,531.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.