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Finding the Fourth Proportional to 85,081.65, 117,416.57 and 47,358.33

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Solution

The fourth proportional to 85,081.65, 117,416.57 and 47,358.33 is: 65,356.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.65 : 117,416.57 = 47,358.33 : x
  2. Step 2: Convert to fraction form
    85,081.65/117,416.57 = 47,358.33/x
  3. Step 3: Cross multiply
    85,081.65x = 117,416.57 × 47,358.33
  4. Step 4: Simplify right side
    85,081.65x = 5,560,652,432.74
  5. Step 5: Solve for x
    x = 5,560,652,432.74/85,081.65
  6. Step 6: Final answer
    x = 65,356.66

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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.