Home / 39,981.79-59,967.11-21,975.67

Finding the Fourth Proportional to 39,981.79, 59,967.11 and 21,975.67

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Solution

The fourth proportional to 39,981.79, 59,967.11 and 21,975.67 is: 32,960.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,981.79 : 59,967.11 = 21,975.67 : x
  2. Step 2: Convert to fraction form
    39,981.79/59,967.11 = 21,975.67/x
  3. Step 3: Cross multiply
    39,981.79x = 59,967.11 × 21,975.67
  4. Step 4: Simplify right side
    39,981.79x = 1,317,817,310.34
  5. Step 5: Solve for x
    x = 1,317,817,310.34/39,981.79
  6. Step 6: Final answer
    x = 32,960.44

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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.