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Finding the Fourth Proportional to 40,655.51, 60,938.76 and 20,935.25

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Solution

The fourth proportional to 40,655.51, 60,938.76 and 20,935.25 is: 31,379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,655.51 : 60,938.76 = 20,935.25 : x
  2. Step 2: Convert to fraction form
    40,655.51/60,938.76 = 20,935.25/x
  3. Step 3: Cross multiply
    40,655.51x = 60,938.76 × 20,935.25
  4. Step 4: Simplify right side
    40,655.51x = 1,275,768,175.29
  5. Step 5: Solve for x
    x = 1,275,768,175.29/40,655.51
  6. Step 6: Final answer
    x = 31,379.96

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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.