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Finding the Fourth Proportional to 66,355.70, 99,533.55 and 61,286.90

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Solution

The fourth proportional to 66,355.70, 99,533.55 and 61,286.90 is: 91,930.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,355.70 : 99,533.55 = 61,286.90 : x
  2. Step 2: Convert to fraction form
    66,355.70/99,533.55 = 61,286.90/x
  3. Step 3: Cross multiply
    66,355.70x = 99,533.55 × 61,286.90
  4. Step 4: Simplify right side
    66,355.70x = 6,100,102,725.50
  5. Step 5: Solve for x
    x = 6,100,102,725.50/66,355.70
  6. Step 6: Final answer
    x = 91,930.35

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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.