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Finding the Fourth Proportional to 72,918.84, 109,379.64 and 23,000.64

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Solution

The fourth proportional to 72,918.84, 109,379.64 and 23,000.64 is: 34,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,918.84 : 109,379.64 = 23,000.64 : x
  2. Step 2: Convert to fraction form
    72,918.84/109,379.64 = 23,000.64/x
  3. Step 3: Cross multiply
    72,918.84x = 109,379.64 × 23,000.64
  4. Step 4: Simplify right side
    72,918.84x = 2,515,801,722.97
  5. Step 5: Solve for x
    x = 2,515,801,722.97/72,918.84
  6. Step 6: Final answer
    x = 34,501.40

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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.