Home / 71,143.50-98,176.66-39,311.71

Finding the Fourth Proportional to 71,143.50, 98,176.66 and 39,311.71

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Solution

The fourth proportional to 71,143.50, 98,176.66 and 39,311.71 is: 54,249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.50 : 98,176.66 = 39,311.71 : x
  2. Step 2: Convert to fraction form
    71,143.50/98,176.66 = 39,311.71/x
  3. Step 3: Cross multiply
    71,143.50x = 98,176.66 × 39,311.71
  4. Step 4: Simplify right side
    71,143.50x = 3,859,492,386.69
  5. Step 5: Solve for x
    x = 3,859,492,386.69/71,143.50
  6. Step 6: Final answer
    x = 54,249.40

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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.