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Finding the Fourth Proportional to 76,290.32, 114,409.56 and 38,835.92

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Solution

The fourth proportional to 76,290.32, 114,409.56 and 38,835.92 is: 58,240.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,290.32 : 114,409.56 = 38,835.92 : x
  2. Step 2: Convert to fraction form
    76,290.32/114,409.56 = 38,835.92/x
  3. Step 3: Cross multiply
    76,290.32x = 114,409.56 × 38,835.92
  4. Step 4: Simplify right side
    76,290.32x = 4,443,200,519.40
  5. Step 5: Solve for x
    x = 4,443,200,519.40/76,290.32
  6. Step 6: Final answer
    x = 58,240.69

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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.