Home / 76,730.20-115,124.10-30,016.60

Finding the Fourth Proportional to 76,730.20, 115,124.10 and 30,016.60

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Solution

The fourth proportional to 76,730.20, 115,124.10 and 30,016.60 is: 45,036.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,730.20 : 115,124.10 = 30,016.60 : x
  2. Step 2: Convert to fraction form
    76,730.20/115,124.10 = 30,016.60/x
  3. Step 3: Cross multiply
    76,730.20x = 115,124.10 × 30,016.60
  4. Step 4: Simplify right side
    76,730.20x = 3,455,634,060.06
  5. Step 5: Solve for x
    x = 3,455,634,060.06/76,730.20
  6. Step 6: Final answer
    x = 45,036.17

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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.