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Finding the Fourth Proportional to 72,973.79, 100,703.64 and 41,142.45

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Solution

The fourth proportional to 72,973.79, 100,703.64 and 41,142.45 is: 56,776.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,973.79 : 100,703.64 = 41,142.45 : x
  2. Step 2: Convert to fraction form
    72,973.79/100,703.64 = 41,142.45/x
  3. Step 3: Cross multiply
    72,973.79x = 100,703.64 × 41,142.45
  4. Step 4: Simplify right side
    72,973.79x = 4,143,194,473.52
  5. Step 5: Solve for x
    x = 4,143,194,473.52/72,973.79
  6. Step 6: Final answer
    x = 56,776.48

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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.