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Finding the Fourth Proportional to 66,455.60, 99,683.40 and 45,460.40

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Solution

The fourth proportional to 66,455.60, 99,683.40 and 45,460.40 is: 68,190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.60 : 99,683.40 = 45,460.40 : x
  2. Step 2: Convert to fraction form
    66,455.60/99,683.40 = 45,460.40/x
  3. Step 3: Cross multiply
    66,455.60x = 99,683.40 × 45,460.40
  4. Step 4: Simplify right side
    66,455.60x = 4,531,647,237.36
  5. Step 5: Solve for x
    x = 4,531,647,237.36/66,455.60
  6. Step 6: Final answer
    x = 68,190.60

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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.