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Finding the Fourth Proportional to 69,475.76, 104,213.64 and 16,885.28

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Solution

The fourth proportional to 69,475.76, 104,213.64 and 16,885.28 is: 25,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,475.76 : 104,213.64 = 16,885.28 : x
  2. Step 2: Convert to fraction form
    69,475.76/104,213.64 = 16,885.28/x
  3. Step 3: Cross multiply
    69,475.76x = 104,213.64 × 16,885.28
  4. Step 4: Simplify right side
    69,475.76x = 1,759,676,491.22
  5. Step 5: Solve for x
    x = 1,759,676,491.22/69,475.76
  6. Step 6: Final answer
    x = 25,327.92

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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.