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Finding the Fourth Proportional to 86,207.79, 118,899.26 and 58,999.98

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Solution

The fourth proportional to 86,207.79, 118,899.26 and 58,999.98 is: 81,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,207.79 : 118,899.26 = 58,999.98 : x
  2. Step 2: Convert to fraction form
    86,207.79/118,899.26 = 58,999.98/x
  3. Step 3: Cross multiply
    86,207.79x = 118,899.26 × 58,999.98
  4. Step 4: Simplify right side
    86,207.79x = 7,015,053,667.01
  5. Step 5: Solve for x
    x = 7,015,053,667.01/86,207.79
  6. Step 6: Final answer
    x = 81,373.78

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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.