Home / 76,890.97-115,442.69-53,140.00

Finding the Fourth Proportional to 76,890.97, 115,442.69 and 53,140.00

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Solution

The fourth proportional to 76,890.97, 115,442.69 and 53,140.00 is: 79,783.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,890.97 : 115,442.69 = 53,140.00 : x
  2. Step 2: Convert to fraction form
    76,890.97/115,442.69 = 53,140.00/x
  3. Step 3: Cross multiply
    76,890.97x = 115,442.69 × 53,140.00
  4. Step 4: Simplify right side
    76,890.97x = 6,134,624,657.12
  5. Step 5: Solve for x
    x = 6,134,624,657.12/76,890.97
  6. Step 6: Final answer
    x = 79,783.42

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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.