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Finding the Fourth Proportional to 74,467.64, 102,789.30 and 47,682.32

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Solution

The fourth proportional to 74,467.64, 102,789.30 and 47,682.32 is: 65,816.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,467.64 : 102,789.30 = 47,682.32 : x
  2. Step 2: Convert to fraction form
    74,467.64/102,789.30 = 47,682.32/x
  3. Step 3: Cross multiply
    74,467.64x = 102,789.30 × 47,682.32
  4. Step 4: Simplify right side
    74,467.64x = 4,901,232,295.18
  5. Step 5: Solve for x
    x = 4,901,232,295.18/74,467.64
  6. Step 6: Final answer
    x = 65,816.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.