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Finding the Fourth Proportional to 72,259.05, 99,751.58 and 54,360.88

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Solution

The fourth proportional to 72,259.05, 99,751.58 and 54,360.88 is: 75,043.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,259.05 : 99,751.58 = 54,360.88 : x
  2. Step 2: Convert to fraction form
    72,259.05/99,751.58 = 54,360.88/x
  3. Step 3: Cross multiply
    72,259.05x = 99,751.58 × 54,360.88
  4. Step 4: Simplify right side
    72,259.05x = 5,422,583,670.19
  5. Step 5: Solve for x
    x = 5,422,583,670.19/72,259.05
  6. Step 6: Final answer
    x = 75,043.66

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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.