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Finding the Fourth Proportional to 86,114.34, 118,857.78 and 54,326.70

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Solution

The fourth proportional to 86,114.34, 118,857.78 and 54,326.70 is: 74,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,114.34 : 118,857.78 = 54,326.70 : x
  2. Step 2: Convert to fraction form
    86,114.34/118,857.78 = 54,326.70/x
  3. Step 3: Cross multiply
    86,114.34x = 118,857.78 × 54,326.70
  4. Step 4: Simplify right side
    86,114.34x = 6,457,150,956.73
  5. Step 5: Solve for x
    x = 6,457,150,956.73/86,114.34
  6. Step 6: Final answer
    x = 74,983.46

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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.