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Finding the Fourth Proportional to 72,201.84, 99,637.80 and 40,369.92

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Solution

The fourth proportional to 72,201.84, 99,637.80 and 40,369.92 is: 55,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,201.84 : 99,637.80 = 40,369.92 : x
  2. Step 2: Convert to fraction form
    72,201.84/99,637.80 = 40,369.92/x
  3. Step 3: Cross multiply
    72,201.84x = 99,637.80 × 40,369.92
  4. Step 4: Simplify right side
    72,201.84x = 4,022,370,014.98
  5. Step 5: Solve for x
    x = 4,022,370,014.98/72,201.84
  6. Step 6: Final answer
    x = 55,710.08

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1.5x scale

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.