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Finding the Fourth Proportional to 66,070.60, 99,133.26 and 36,485.80

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Solution

The fourth proportional to 66,070.60, 99,133.26 and 36,485.80 is: 54,743.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,070.60 : 99,133.26 = 36,485.80 : x
  2. Step 2: Convert to fraction form
    66,070.60/99,133.26 = 36,485.80/x
  3. Step 3: Cross multiply
    66,070.60x = 99,133.26 × 36,485.80
  4. Step 4: Simplify right side
    66,070.60x = 3,616,956,297.71
  5. Step 5: Solve for x
    x = 3,616,956,297.71/66,070.60
  6. Step 6: Final answer
    x = 54,743.81

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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.