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Finding the Fourth Proportional to 86,801.68, 119,789.04 and 49,078.40

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Solution

The fourth proportional to 86,801.68, 119,789.04 and 49,078.40 is: 67,729.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,801.68 : 119,789.04 = 49,078.40 : x
  2. Step 2: Convert to fraction form
    86,801.68/119,789.04 = 49,078.40/x
  3. Step 3: Cross multiply
    86,801.68x = 119,789.04 × 49,078.40
  4. Step 4: Simplify right side
    86,801.68x = 5,879,054,420.74
  5. Step 5: Solve for x
    x = 5,879,054,420.74/86,801.68
  6. Step 6: Final answer
    x = 67,729.73

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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.