Home / 45,139.75-67,709.47-13,549.68

Finding the Fourth Proportional to 45,139.75, 67,709.47 and 13,549.68

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Solution

The fourth proportional to 45,139.75, 67,709.47 and 13,549.68 is: 20,324.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.75 : 67,709.47 = 13,549.68 : x
  2. Step 2: Convert to fraction form
    45,139.75/67,709.47 = 13,549.68/x
  3. Step 3: Cross multiply
    45,139.75x = 67,709.47 × 13,549.68
  4. Step 4: Simplify right side
    45,139.75x = 917,441,643.00
  5. Step 5: Solve for x
    x = 917,441,643.00/45,139.75
  6. Step 6: Final answer
    x = 20,324.47

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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.