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Finding the Fourth Proportional to 71,360.38, 107,039.35 and 21,440.89

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Solution

The fourth proportional to 71,360.38, 107,039.35 and 21,440.89 is: 32,160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,360.38 : 107,039.35 = 21,440.89 : x
  2. Step 2: Convert to fraction form
    71,360.38/107,039.35 = 21,440.89/x
  3. Step 3: Cross multiply
    71,360.38x = 107,039.35 × 21,440.89
  4. Step 4: Simplify right side
    71,360.38x = 2,295,018,929.02
  5. Step 5: Solve for x
    x = 2,295,018,929.02/71,360.38
  6. Step 6: Final answer
    x = 32,160.97

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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.