Home / 77,285.07-106,471.31-72,634.96

Finding the Fourth Proportional to 77,285.07, 106,471.31 and 72,634.96

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Solution

The fourth proportional to 77,285.07, 106,471.31 and 72,634.96 is: 100,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,285.07 : 106,471.31 = 72,634.96 : x
  2. Step 2: Convert to fraction form
    77,285.07/106,471.31 = 72,634.96/x
  3. Step 3: Cross multiply
    77,285.07x = 106,471.31 × 72,634.96
  4. Step 4: Simplify right side
    77,285.07x = 7,733,539,343.00
  5. Step 5: Solve for x
    x = 7,733,539,343.00/77,285.07
  6. Step 6: Final answer
    x = 100,065.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.