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Finding the Fourth Proportional to 81,460.89, 122,182.32 and 21,495.45

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Solution

The fourth proportional to 81,460.89, 122,182.32 and 21,495.45 is: 32,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,460.89 : 122,182.32 = 21,495.45 : x
  2. Step 2: Convert to fraction form
    81,460.89/122,182.32 = 21,495.45/x
  3. Step 3: Cross multiply
    81,460.89x = 122,182.32 × 21,495.45
  4. Step 4: Simplify right side
    81,460.89x = 2,626,363,950.44
  5. Step 5: Solve for x
    x = 2,626,363,950.44/81,460.89
  6. Step 6: Final answer
    x = 32,240.80

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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.