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Finding the Fourth Proportional to 66,063.73, 91,146.74 and 36,987.81

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Solution

The fourth proportional to 66,063.73, 91,146.74 and 36,987.81 is: 51,031.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,063.73 : 91,146.74 = 36,987.81 : x
  2. Step 2: Convert to fraction form
    66,063.73/91,146.74 = 36,987.81/x
  3. Step 3: Cross multiply
    66,063.73x = 91,146.74 × 36,987.81
  4. Step 4: Simplify right side
    66,063.73x = 3,371,318,393.71
  5. Step 5: Solve for x
    x = 3,371,318,393.71/66,063.73
  6. Step 6: Final answer
    x = 51,031.31

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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.