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Finding the Fourth Proportional to 66,703.29, 100,047.54 and 16,783.40

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Solution

The fourth proportional to 66,703.29, 100,047.54 and 16,783.40 is: 25,173.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,703.29 : 100,047.54 = 16,783.40 : x
  2. Step 2: Convert to fraction form
    66,703.29/100,047.54 = 16,783.40/x
  3. Step 3: Cross multiply
    66,703.29x = 100,047.54 × 16,783.40
  4. Step 4: Simplify right side
    66,703.29x = 1,679,137,382.60
  5. Step 5: Solve for x
    x = 1,679,137,382.60/66,703.29
  6. Step 6: Final answer
    x = 25,173.23

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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.