Home / 81,536.48-122,316.90-28,941.56

Finding the Fourth Proportional to 81,536.48, 122,316.90 and 28,941.56

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Solution

The fourth proportional to 81,536.48, 122,316.90 and 28,941.56 is: 43,416.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.48 : 122,316.90 = 28,941.56 : x
  2. Step 2: Convert to fraction form
    81,536.48/122,316.90 = 28,941.56/x
  3. Step 3: Cross multiply
    81,536.48x = 122,316.90 × 28,941.56
  4. Step 4: Simplify right side
    81,536.48x = 3,540,041,900.36
  5. Step 5: Solve for x
    x = 3,540,041,900.36/81,536.48
  6. Step 6: Final answer
    x = 43,416.66

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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.