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Finding the Fourth Proportional to 66,480.51, 91,741.50 and 38,188.02

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Solution

The fourth proportional to 66,480.51, 91,741.50 and 38,188.02 is: 52,698.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,480.51 : 91,741.50 = 38,188.02 : x
  2. Step 2: Convert to fraction form
    66,480.51/91,741.50 = 38,188.02/x
  3. Step 3: Cross multiply
    66,480.51x = 91,741.50 × 38,188.02
  4. Step 4: Simplify right side
    66,480.51x = 3,503,426,236.83
  5. Step 5: Solve for x
    x = 3,503,426,236.83/66,480.51
  6. Step 6: Final answer
    x = 52,698.55

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Why These Related Problems?

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