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Finding the Fourth Proportional to 86,811.60, 117,564.30 and 86,811.60

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Solution

The fourth proportional to 86,811.60, 117,564.30 and 86,811.60 is: 117,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,811.60 : 117,564.30 = 86,811.60 : x
  2. Step 2: Convert to fraction form
    86,811.60/117,564.30 = 86,811.60/x
  3. Step 3: Cross multiply
    86,811.60x = 117,564.30 × 86,811.60
  4. Step 4: Simplify right side
    86,811.60x = 10,205,944,985.88
  5. Step 5: Solve for x
    x = 10,205,944,985.88/86,811.60
  6. Step 6: Final answer
    x = 117,564.30

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.