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Finding the Fourth Proportional to 72,577.88, 100,167.81 and 40,748.93

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Solution

The fourth proportional to 72,577.88, 100,167.81 and 40,748.93 is: 56,239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,577.88 : 100,167.81 = 40,748.93 : x
  2. Step 2: Convert to fraction form
    72,577.88/100,167.81 = 40,748.93/x
  3. Step 3: Cross multiply
    72,577.88x = 100,167.81 × 40,748.93
  4. Step 4: Simplify right side
    72,577.88x = 4,081,731,077.94
  5. Step 5: Solve for x
    x = 4,081,731,077.94/72,577.88
  6. Step 6: Final answer
    x = 56,239.33

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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.