Home / 85,127.45-117,479.51-47,401.70

Finding the Fourth Proportional to 85,127.45, 117,479.51 and 47,401.70

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Solution

The fourth proportional to 85,127.45, 117,479.51 and 47,401.70 is: 65,416.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,127.45 : 117,479.51 = 47,401.70 : x
  2. Step 2: Convert to fraction form
    85,127.45/117,479.51 = 47,401.70/x
  3. Step 3: Cross multiply
    85,127.45x = 117,479.51 × 47,401.70
  4. Step 4: Simplify right side
    85,127.45x = 5,568,727,664.76
  5. Step 5: Solve for x
    x = 5,568,727,664.76/85,127.45
  6. Step 6: Final answer
    x = 65,416.36

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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.