Home / 76,686.08-115,043.64-29,936

Finding the Fourth Proportional to 76,686.08, 115,043.64 and 29,936

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Solution

The fourth proportional to 76,686.08, 115,043.64 and 29,936 is: 44,909.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,686.08 : 115,043.64 = 29,936 : x
  2. Step 2: Convert to fraction form
    76,686.08/115,043.64 = 29,936/x
  3. Step 3: Cross multiply
    76,686.08x = 115,043.64 × 29,936
  4. Step 4: Simplify right side
    76,686.08x = 3,443,946,407.04
  5. Step 5: Solve for x
    x = 3,443,946,407.04/76,686.08
  6. Step 6: Final answer
    x = 44,909.67

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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.