Home / 42,880.66-64,342.94-20,416.75

Finding the Fourth Proportional to 42,880.66, 64,342.94 and 20,416.75

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Solution

The fourth proportional to 42,880.66, 64,342.94 and 20,416.75 is: 30,635.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,880.66 : 64,342.94 = 20,416.75 : x
  2. Step 2: Convert to fraction form
    42,880.66/64,342.94 = 20,416.75/x
  3. Step 3: Cross multiply
    42,880.66x = 64,342.94 × 20,416.75
  4. Step 4: Simplify right side
    42,880.66x = 1,313,673,457.30
  5. Step 5: Solve for x
    x = 1,313,673,457.30/42,880.66
  6. Step 6: Final answer
    x = 30,635.57

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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.