Home / 60,757.32-91,136.76-21,315.60

Finding the Fourth Proportional to 60,757.32, 91,136.76 and 21,315.60

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Solution

The fourth proportional to 60,757.32, 91,136.76 and 21,315.60 is: 31,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,757.32 : 91,136.76 = 21,315.60 : x
  2. Step 2: Convert to fraction form
    60,757.32/91,136.76 = 21,315.60/x
  3. Step 3: Cross multiply
    60,757.32x = 91,136.76 × 21,315.60
  4. Step 4: Simplify right side
    60,757.32x = 1,942,634,721.46
  5. Step 5: Solve for x
    x = 1,942,634,721.46/60,757.32
  6. Step 6: Final answer
    x = 31,973.67

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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.