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Finding the Fourth Proportional to 40,635.80, 60,929.40 and 20,952.80

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Solution

The fourth proportional to 40,635.80, 60,929.40 and 20,952.80 is: 31,416.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,635.80 : 60,929.40 = 20,952.80 : x
  2. Step 2: Convert to fraction form
    40,635.80/60,929.40 = 20,952.80/x
  3. Step 3: Cross multiply
    40,635.80x = 60,929.40 × 20,952.80
  4. Step 4: Simplify right side
    40,635.80x = 1,276,641,532.32
  5. Step 5: Solve for x
    x = 1,276,641,532.32/40,635.80
  6. Step 6: Final answer
    x = 31,416.67

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1.5x scale

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.