Home / 68,415.40-94,386.42-39,730.15

Finding the Fourth Proportional to 68,415.40, 94,386.42 and 39,730.15

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Solution

The fourth proportional to 68,415.40, 94,386.42 and 39,730.15 is: 54,812.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,415.40 : 94,386.42 = 39,730.15 : x
  2. Step 2: Convert to fraction form
    68,415.40/94,386.42 = 39,730.15/x
  3. Step 3: Cross multiply
    68,415.40x = 94,386.42 × 39,730.15
  4. Step 4: Simplify right side
    68,415.40x = 3,749,986,624.56
  5. Step 5: Solve for x
    x = 3,749,986,624.56/68,415.40
  6. Step 6: Final answer
    x = 54,812.03

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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.