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Finding the Fourth Proportional to 86,076.91, 118,785.67 and 47,315.62

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Solution

The fourth proportional to 86,076.91, 118,785.67 and 47,315.62 is: 65,295.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,076.91 : 118,785.67 = 47,315.62 : x
  2. Step 2: Convert to fraction form
    86,076.91/118,785.67 = 47,315.62/x
  3. Step 3: Cross multiply
    86,076.91x = 118,785.67 × 47,315.62
  4. Step 4: Simplify right side
    86,076.91x = 5,620,417,623.17
  5. Step 5: Solve for x
    x = 5,620,417,623.17/86,076.91
  6. Step 6: Final answer
    x = 65,295.30

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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.