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Finding the Fourth Proportional to 78,573.64, 108,468.72 and 50,295.74

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Solution

The fourth proportional to 78,573.64, 108,468.72 and 50,295.74 is: 69,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,573.64 : 108,468.72 = 50,295.74 : x
  2. Step 2: Convert to fraction form
    78,573.64/108,468.72 = 50,295.74/x
  3. Step 3: Cross multiply
    78,573.64x = 108,468.72 × 50,295.74
  4. Step 4: Simplify right side
    78,573.64x = 5,455,514,539.25
  5. Step 5: Solve for x
    x = 5,455,514,539.25/78,573.64
  6. Step 6: Final answer
    x = 69,431.87

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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.