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Finding the Fourth Proportional to 42,361.60, 63,615.30 and 29,968.60

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Solution

The fourth proportional to 42,361.60, 63,615.30 and 29,968.60 is: 45,004.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,361.60 : 63,615.30 = 29,968.60 : x
  2. Step 2: Convert to fraction form
    42,361.60/63,615.30 = 29,968.60/x
  3. Step 3: Cross multiply
    42,361.60x = 63,615.30 × 29,968.60
  4. Step 4: Simplify right side
    42,361.60x = 1,906,461,479.58
  5. Step 5: Solve for x
    x = 1,906,461,479.58/42,361.60
  6. Step 6: Final answer
    x = 45,004.47

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1.5x scale

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.