Home / 71,340.41-98,449.70-39,509.30

Finding the Fourth Proportional to 71,340.41, 98,449.70 and 39,509.30

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Solution

The fourth proportional to 71,340.41, 98,449.70 and 39,509.30 is: 54,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,340.41 : 98,449.70 = 39,509.30 : x
  2. Step 2: Convert to fraction form
    71,340.41/98,449.70 = 39,509.30/x
  3. Step 3: Cross multiply
    71,340.41x = 98,449.70 × 39,509.30
  4. Step 4: Simplify right side
    71,340.41x = 3,889,678,780.79
  5. Step 5: Solve for x
    x = 3,889,678,780.79/71,340.41
  6. Step 6: Final answer
    x = 54,522.80

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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.