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Finding the Fourth Proportional to 81,750.90, 122,561.55 and 44,814.90

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Solution

The fourth proportional to 81,750.90, 122,561.55 and 44,814.90 is: 67,186.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,750.90 : 122,561.55 = 44,814.90 : x
  2. Step 2: Convert to fraction form
    81,750.90/122,561.55 = 44,814.90/x
  3. Step 3: Cross multiply
    81,750.90x = 122,561.55 × 44,814.90
  4. Step 4: Simplify right side
    81,750.90x = 5,492,583,607.10
  5. Step 5: Solve for x
    x = 5,492,583,607.10/81,750.90
  6. Step 6: Final answer
    x = 67,186.83

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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.