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Finding the Fourth Proportional to 66,355.60, 99,533.40 and 29,419.60

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Solution

The fourth proportional to 66,355.60, 99,533.40 and 29,419.60 is: 44,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.60 : 99,533.40 = 29,419.60 : x
  2. Step 2: Convert to fraction form
    66,355.60/99,533.40 = 29,419.60/x
  3. Step 3: Cross multiply
    66,355.60x = 99,533.40 × 29,419.60
  4. Step 4: Simplify right side
    66,355.60x = 2,928,232,814.64
  5. Step 5: Solve for x
    x = 2,928,232,814.64/66,355.60
  6. Step 6: Final answer
    x = 44,129.40

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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.