Home / 76,784.64-115,186.72-30,031.44

Finding the Fourth Proportional to 76,784.64, 115,186.72 and 30,031.44

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Solution

The fourth proportional to 76,784.64, 115,186.72 and 30,031.44 is: 45,050.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,784.64 : 115,186.72 = 30,031.44 : x
  2. Step 2: Convert to fraction form
    76,784.64/115,186.72 = 30,031.44/x
  3. Step 3: Cross multiply
    76,784.64x = 115,186.72 × 30,031.44
  4. Step 4: Simplify right side
    76,784.64x = 3,459,223,070.48
  5. Step 5: Solve for x
    x = 3,459,223,070.48/76,784.64
  6. Step 6: Final answer
    x = 45,050.98

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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.