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Finding the Fourth Proportional to 66,254.89, 91,430.80 and 36,040.47

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Solution

The fourth proportional to 66,254.89, 91,430.80 and 36,040.47 is: 49,735.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,254.89 : 91,430.80 = 36,040.47 : x
  2. Step 2: Convert to fraction form
    66,254.89/91,430.80 = 36,040.47/x
  3. Step 3: Cross multiply
    66,254.89x = 91,430.80 × 36,040.47
  4. Step 4: Simplify right side
    66,254.89x = 3,295,208,930.02
  5. Step 5: Solve for x
    x = 3,295,208,930.02/66,254.89
  6. Step 6: Final answer
    x = 49,735.33

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1.5x scale

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.