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Finding the Fourth Proportional to 66,120.61, 91,256.75 and 37,441.75

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Solution

The fourth proportional to 66,120.61, 91,256.75 and 37,441.75 is: 51,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,120.61 : 91,256.75 = 37,441.75 : x
  2. Step 2: Convert to fraction form
    66,120.61/91,256.75 = 37,441.75/x
  3. Step 3: Cross multiply
    66,120.61x = 91,256.75 × 37,441.75
  4. Step 4: Simplify right side
    66,120.61x = 3,416,812,419.31
  5. Step 5: Solve for x
    x = 3,416,812,419.31/66,120.61
  6. Step 6: Final answer
    x = 51,675.45

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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.