Home / 76,830.60-115,204.13-34,661.30

Finding the Fourth Proportional to 76,830.60, 115,204.13 and 34,661.30

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Solution

The fourth proportional to 76,830.60, 115,204.13 and 34,661.30 is: 51,973.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,830.60 : 115,204.13 = 34,661.30 : x
  2. Step 2: Convert to fraction form
    76,830.60/115,204.13 = 34,661.30/x
  3. Step 3: Cross multiply
    76,830.60x = 115,204.13 × 34,661.30
  4. Step 4: Simplify right side
    76,830.60x = 3,993,124,911.17
  5. Step 5: Solve for x
    x = 3,993,124,911.17/76,830.60
  6. Step 6: Final answer
    x = 51,973.11

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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.