Home / 71,247.35-98,315.92-39,415.56

Finding the Fourth Proportional to 71,247.35, 98,315.92 and 39,415.56

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Solution

The fourth proportional to 71,247.35, 98,315.92 and 39,415.56 is: 54,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,247.35 : 98,315.92 = 39,415.56 : x
  2. Step 2: Convert to fraction form
    71,247.35/98,315.92 = 39,415.56/x
  3. Step 3: Cross multiply
    71,247.35x = 98,315.92 × 39,415.56
  4. Step 4: Simplify right side
    71,247.35x = 3,875,176,846.64
  5. Step 5: Solve for x
    x = 3,875,176,846.64/71,247.35
  6. Step 6: Final answer
    x = 54,390.47

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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.