Home / 77,156.09-115,614.45-53,509.76

Finding the Fourth Proportional to 77,156.09, 115,614.45 and 53,509.76

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Solution

The fourth proportional to 77,156.09, 115,614.45 and 53,509.76 is: 80,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,156.09 : 115,614.45 = 53,509.76 : x
  2. Step 2: Convert to fraction form
    77,156.09/115,614.45 = 53,509.76/x
  3. Step 3: Cross multiply
    77,156.09x = 115,614.45 × 53,509.76
  4. Step 4: Simplify right side
    77,156.09x = 6,186,500,893.96
  5. Step 5: Solve for x
    x = 6,186,500,893.96/77,156.09
  6. Step 6: Final answer
    x = 80,181.63

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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.