Home / 80,699.06-121,048.60-21,534.94

Finding the Fourth Proportional to 80,699.06, 121,048.60 and 21,534.94

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Solution

The fourth proportional to 80,699.06, 121,048.60 and 21,534.94 is: 32,302.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,699.06 : 121,048.60 = 21,534.94 : x
  2. Step 2: Convert to fraction form
    80,699.06/121,048.60 = 21,534.94/x
  3. Step 3: Cross multiply
    80,699.06x = 121,048.60 × 21,534.94
  4. Step 4: Simplify right side
    80,699.06x = 2,606,774,338.08
  5. Step 5: Solve for x
    x = 2,606,774,338.08/80,699.06
  6. Step 6: Final answer
    x = 32,302.41

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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.