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Finding the Fourth Proportional to 72,393.56, 99,901.86 and 40,562.36

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Solution

The fourth proportional to 72,393.56, 99,901.86 and 40,562.36 is: 55,975.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,393.56 : 99,901.86 = 40,562.36 : x
  2. Step 2: Convert to fraction form
    72,393.56/99,901.86 = 40,562.36/x
  3. Step 3: Cross multiply
    72,393.56x = 99,901.86 × 40,562.36
  4. Step 4: Simplify right side
    72,393.56x = 4,052,255,209.99
  5. Step 5: Solve for x
    x = 4,052,255,209.99/72,393.56
  6. Step 6: Final answer
    x = 55,975.35

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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.