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Finding the Fourth Proportional to 84,079.21, 116,009.13 and 47,772.67

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Solution

The fourth proportional to 84,079.21, 116,009.13 and 47,772.67 is: 65,914.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,079.21 : 116,009.13 = 47,772.67 : x
  2. Step 2: Convert to fraction form
    84,079.21/116,009.13 = 47,772.67/x
  3. Step 3: Cross multiply
    84,079.21x = 116,009.13 × 47,772.67
  4. Step 4: Simplify right side
    84,079.21x = 5,542,065,884.48
  5. Step 5: Solve for x
    x = 5,542,065,884.48/84,079.21
  6. Step 6: Final answer
    x = 65,914.82

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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.