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Finding the Fourth Proportional to 72,376.98, 99,941.41 and 54,440.74

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Solution

The fourth proportional to 72,376.98, 99,941.41 and 54,440.74 is: 75,174.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,376.98 : 99,941.41 = 54,440.74 : x
  2. Step 2: Convert to fraction form
    72,376.98/99,941.41 = 54,440.74/x
  3. Step 3: Cross multiply
    72,376.98x = 99,941.41 × 54,440.74
  4. Step 4: Simplify right side
    72,376.98x = 5,440,884,317.04
  5. Step 5: Solve for x
    x = 5,440,884,317.04/72,376.98
  6. Step 6: Final answer
    x = 75,174.24

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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.