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Finding the Fourth Proportional to 66,172.97, 91,322.20 and 37,498.19

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Solution

The fourth proportional to 66,172.97, 91,322.20 and 37,498.19 is: 51,749.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,172.97 : 91,322.20 = 37,498.19 : x
  2. Step 2: Convert to fraction form
    66,172.97/91,322.20 = 37,498.19/x
  3. Step 3: Cross multiply
    66,172.97x = 91,322.20 × 37,498.19
  4. Step 4: Simplify right side
    66,172.97x = 3,424,417,152.57
  5. Step 5: Solve for x
    x = 3,424,417,152.57/66,172.97
  6. Step 6: Final answer
    x = 51,749.49

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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.