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Finding the Fourth Proportional to 75,252.72, 103,612.32 and 63,898.32

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Solution

The fourth proportional to 75,252.72, 103,612.32 and 63,898.32 is: 87,978.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,252.72 : 103,612.32 = 63,898.32 : x
  2. Step 2: Convert to fraction form
    75,252.72/103,612.32 = 63,898.32/x
  3. Step 3: Cross multiply
    75,252.72x = 103,612.32 × 63,898.32
  4. Step 4: Simplify right side
    75,252.72x = 6,620,653,179.30
  5. Step 5: Solve for x
    x = 6,620,653,179.30/75,252.72
  6. Step 6: Final answer
    x = 87,978.92

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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.