Home / 86,930.40-130,363.20-30,748.80

Finding the Fourth Proportional to 86,930.40, 130,363.20 and 30,748.80

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Solution

The fourth proportional to 86,930.40, 130,363.20 and 30,748.80 is: 46,111.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,930.40 : 130,363.20 = 30,748.80 : x
  2. Step 2: Convert to fraction form
    86,930.40/130,363.20 = 30,748.80/x
  3. Step 3: Cross multiply
    86,930.40x = 130,363.20 × 30,748.80
  4. Step 4: Simplify right side
    86,930.40x = 4,008,511,964.16
  5. Step 5: Solve for x
    x = 4,008,511,964.16/86,930.40
  6. Step 6: Final answer
    x = 46,111.74

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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.