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Finding the Fourth Proportional to 66,311.52, 99,477 and 19,558.32

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Solution

The fourth proportional to 66,311.52, 99,477 and 19,558.32 is: 29,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311.52 : 99,477 = 19,558.32 : x
  2. Step 2: Convert to fraction form
    66,311.52/99,477 = 19,558.32/x
  3. Step 3: Cross multiply
    66,311.52x = 99,477 × 19,558.32
  4. Step 4: Simplify right side
    66,311.52x = 1,945,602,998.64
  5. Step 5: Solve for x
    x = 1,945,602,998.64/66,311.52
  6. Step 6: Final answer
    x = 29,340.35

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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.