Home / 66,246.12-91,409.76-39,389.76

Finding the Fourth Proportional to 66,246.12, 91,409.76 and 39,389.76

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Solution

The fourth proportional to 66,246.12, 91,409.76 and 39,389.76 is: 54,351.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,246.12 : 91,409.76 = 39,389.76 : x
  2. Step 2: Convert to fraction form
    66,246.12/91,409.76 = 39,389.76/x
  3. Step 3: Cross multiply
    66,246.12x = 91,409.76 × 39,389.76
  4. Step 4: Simplify right side
    66,246.12x = 3,600,608,508.06
  5. Step 5: Solve for x
    x = 3,600,608,508.06/66,246.12
  6. Step 6: Final answer
    x = 54,351.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.