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Finding the Fourth Proportional to 84,864.78, 117,118.44 and 47,138.76

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Solution

The fourth proportional to 84,864.78, 117,118.44 and 47,138.76 is: 65,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,864.78 : 117,118.44 = 47,138.76 : x
  2. Step 2: Convert to fraction form
    84,864.78/117,118.44 = 47,138.76/x
  3. Step 3: Cross multiply
    84,864.78x = 117,118.44 × 47,138.76
  4. Step 4: Simplify right side
    84,864.78x = 5,520,818,034.73
  5. Step 5: Solve for x
    x = 5,520,818,034.73/84,864.78
  6. Step 6: Final answer
    x = 65,054.29

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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.