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Finding the Fourth Proportional to 93,565.78, 129,120.64 and 53,279.54

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Solution

The fourth proportional to 93,565.78, 129,120.64 and 53,279.54 is: 73,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,565.78 : 129,120.64 = 53,279.54 : x
  2. Step 2: Convert to fraction form
    93,565.78/129,120.64 = 53,279.54/x
  3. Step 3: Cross multiply
    93,565.78x = 129,120.64 × 53,279.54
  4. Step 4: Simplify right side
    93,565.78x = 6,879,488,135.16
  5. Step 5: Solve for x
    x = 6,879,488,135.16/93,565.78
  6. Step 6: Final answer
    x = 73,525.69

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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.