Home / 105,586.50-145,707.57-57,839.70

Finding the Fourth Proportional to 105,586.50, 145,707.57 and 57,839.70

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Solution

The fourth proportional to 105,586.50, 145,707.57 and 57,839.70 is: 79,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,586.50 : 145,707.57 = 57,839.70 : x
  2. Step 2: Convert to fraction form
    105,586.50/145,707.57 = 57,839.70/x
  3. Step 3: Cross multiply
    105,586.50x = 145,707.57 × 57,839.70
  4. Step 4: Simplify right side
    105,586.50x = 8,427,682,136.53
  5. Step 5: Solve for x
    x = 8,427,682,136.53/105,586.50
  6. Step 6: Final answer
    x = 79,817.80

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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.