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Finding the Fourth Proportional to 72,509.33, 100,063.86 and 54,327.80

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Solution

The fourth proportional to 72,509.33, 100,063.86 and 54,327.80 is: 74,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,509.33 : 100,063.86 = 54,327.80 : x
  2. Step 2: Convert to fraction form
    72,509.33/100,063.86 = 54,327.80/x
  3. Step 3: Cross multiply
    72,509.33x = 100,063.86 × 54,327.80
  4. Step 4: Simplify right side
    72,509.33x = 5,436,249,373.31
  5. Step 5: Solve for x
    x = 5,436,249,373.31/72,509.33
  6. Step 6: Final answer
    x = 74,973.10

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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.