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Finding the Fourth Proportional to 63,987.40, 96,009.90 and 30,694.60

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Solution

The fourth proportional to 63,987.40, 96,009.90 and 30,694.60 is: 46,055.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,987.40 : 96,009.90 = 30,694.60 : x
  2. Step 2: Convert to fraction form
    63,987.40/96,009.90 = 30,694.60/x
  3. Step 3: Cross multiply
    63,987.40x = 96,009.90 × 30,694.60
  4. Step 4: Simplify right side
    63,987.40x = 2,946,985,476.54
  5. Step 5: Solve for x
    x = 2,946,985,476.54/63,987.40
  6. Step 6: Final answer
    x = 46,055.72

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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.