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Finding the Fourth Proportional to 84,879, 117,133.10 and 47,156.76

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Solution

The fourth proportional to 84,879, 117,133.10 and 47,156.76 is: 65,076.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,879 : 117,133.10 = 47,156.76 : x
  2. Step 2: Convert to fraction form
    84,879/117,133.10 = 47,156.76/x
  3. Step 3: Cross multiply
    84,879x = 117,133.10 × 47,156.76
  4. Step 4: Simplify right side
    84,879x = 5,523,617,484.76
  5. Step 5: Solve for x
    x = 5,523,617,484.76/84,879
  6. Step 6: Final answer
    x = 65,076.37

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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.