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Finding the Fourth Proportional to 76,863.63, 115,330.47 and 39,449.97

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Solution

The fourth proportional to 76,863.63, 115,330.47 and 39,449.97 is: 59,192.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,863.63 : 115,330.47 = 39,449.97 : x
  2. Step 2: Convert to fraction form
    76,863.63/115,330.47 = 39,449.97/x
  3. Step 3: Cross multiply
    76,863.63x = 115,330.47 × 39,449.97
  4. Step 4: Simplify right side
    76,863.63x = 4,549,782,807.68
  5. Step 5: Solve for x
    x = 4,549,782,807.68/76,863.63
  6. Step 6: Final answer
    x = 59,192.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.