Home / 76,913.86-115,477.02-53,162.90

Finding the Fourth Proportional to 76,913.86, 115,477.02 and 53,162.90

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Solution

The fourth proportional to 76,913.86, 115,477.02 and 53,162.90 is: 79,817.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,913.86 : 115,477.02 = 53,162.90 : x
  2. Step 2: Convert to fraction form
    76,913.86/115,477.02 = 53,162.90/x
  3. Step 3: Cross multiply
    76,913.86x = 115,477.02 × 53,162.90
  4. Step 4: Simplify right side
    76,913.86x = 6,139,093,266.56
  5. Step 5: Solve for x
    x = 6,139,093,266.56/76,913.86
  6. Step 6: Final answer
    x = 79,817.78

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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.