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Finding the Fourth Proportional to 86,657.34, 129,959.55 and 36,736.50

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Solution

The fourth proportional to 86,657.34, 129,959.55 and 36,736.50 is: 55,093.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,657.34 : 129,959.55 = 36,736.50 : x
  2. Step 2: Convert to fraction form
    86,657.34/129,959.55 = 36,736.50/x
  3. Step 3: Cross multiply
    86,657.34x = 129,959.55 × 36,736.50
  4. Step 4: Simplify right side
    86,657.34x = 4,774,259,008.58
  5. Step 5: Solve for x
    x = 4,774,259,008.58/86,657.34
  6. Step 6: Final answer
    x = 55,093.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.