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Finding the Fourth Proportional to 86,742.84, 119,691.90 and 49,003.32

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Solution

The fourth proportional to 86,742.84, 119,691.90 and 49,003.32 is: 67,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,742.84 : 119,691.90 = 49,003.32 : x
  2. Step 2: Convert to fraction form
    86,742.84/119,691.90 = 49,003.32/x
  3. Step 3: Cross multiply
    86,742.84x = 119,691.90 × 49,003.32
  4. Step 4: Simplify right side
    86,742.84x = 5,865,300,477.11
  5. Step 5: Solve for x
    x = 5,865,300,477.11/86,742.84
  6. Step 6: Final answer
    x = 67,617.11

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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.