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Finding the Fourth Proportional to 63,120, 87,108.38 and 36,270.93

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Solution

The fourth proportional to 63,120, 87,108.38 and 36,270.93 is: 50,055.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,120 : 87,108.38 = 36,270.93 : x
  2. Step 2: Convert to fraction form
    63,120/87,108.38 = 36,270.93/x
  3. Step 3: Cross multiply
    63,120x = 87,108.38 × 36,270.93
  4. Step 4: Simplify right side
    63,120x = 3,159,501,953.39
  5. Step 5: Solve for x
    x = 3,159,501,953.39/63,120
  6. Step 6: Final answer
    x = 50,055.48

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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.