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Finding the Fourth Proportional to 36,705.51, 50,663.58 and 21,603

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Solution

The fourth proportional to 36,705.51, 50,663.58 and 21,603 is: 29,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,705.51 : 50,663.58 = 21,603 : x
  2. Step 2: Convert to fraction form
    36,705.51/50,663.58 = 21,603/x
  3. Step 3: Cross multiply
    36,705.51x = 50,663.58 × 21,603
  4. Step 4: Simplify right side
    36,705.51x = 1,094,485,318.74
  5. Step 5: Solve for x
    x = 1,094,485,318.74/36,705.51
  6. Step 6: Final answer
    x = 29,818.01

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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.