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Finding the Fourth Proportional to 66,900.40, 100,265.55 and 27,412.90

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Solution

The fourth proportional to 66,900.40, 100,265.55 and 27,412.90 is: 41,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,900.40 : 100,265.55 = 27,412.90 : x
  2. Step 2: Convert to fraction form
    66,900.40/100,265.55 = 27,412.90/x
  3. Step 3: Cross multiply
    66,900.40x = 100,265.55 × 27,412.90
  4. Step 4: Simplify right side
    66,900.40x = 2,748,569,495.60
  5. Step 5: Solve for x
    x = 2,748,569,495.60/66,900.40
  6. Step 6: Final answer
    x = 41,084.50

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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.