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Finding the Fourth Proportional to 66,370.60, 99,555.72 and 54,659.08

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Solution

The fourth proportional to 66,370.60, 99,555.72 and 54,659.08 is: 81,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,370.60 : 99,555.72 = 54,659.08 : x
  2. Step 2: Convert to fraction form
    66,370.60/99,555.72 = 54,659.08/x
  3. Step 3: Cross multiply
    66,370.60x = 99,555.72 × 54,659.08
  4. Step 4: Simplify right side
    66,370.60x = 5,441,624,063.94
  5. Step 5: Solve for x
    x = 5,441,624,063.94/66,370.60
  6. Step 6: Final answer
    x = 81,988.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.