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Finding the Fourth Proportional to 72,924.72, 109,277.73 and 56,259.78

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Solution

The fourth proportional to 72,924.72, 109,277.73 and 56,259.78 is: 84,305.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,924.72 : 109,277.73 = 56,259.78 : x
  2. Step 2: Convert to fraction form
    72,924.72/109,277.73 = 56,259.78/x
  3. Step 3: Cross multiply
    72,924.72x = 109,277.73 × 56,259.78
  4. Step 4: Simplify right side
    72,924.72x = 6,147,941,048.70
  5. Step 5: Solve for x
    x = 6,147,941,048.70/72,924.72
  6. Step 6: Final answer
    x = 84,305.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.