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Finding the Fourth Proportional to 86,388.29, 129,600.03 and 48,965.07

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Solution

The fourth proportional to 86,388.29, 129,600.03 and 48,965.07 is: 73,457.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,388.29 : 129,600.03 = 48,965.07 : x
  2. Step 2: Convert to fraction form
    86,388.29/129,600.03 = 48,965.07/x
  3. Step 3: Cross multiply
    86,388.29x = 129,600.03 × 48,965.07
  4. Step 4: Simplify right side
    86,388.29x = 6,345,874,540.95
  5. Step 5: Solve for x
    x = 6,345,874,540.95/86,388.29
  6. Step 6: Final answer
    x = 73,457.58

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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.