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Finding the Fourth Proportional to 72,372.48, 99,935.20 and 54,436.24

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Solution

The fourth proportional to 72,372.48, 99,935.20 and 54,436.24 is: 75,168.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,372.48 : 99,935.20 = 54,436.24 : x
  2. Step 2: Convert to fraction form
    72,372.48/99,935.20 = 54,436.24/x
  3. Step 3: Cross multiply
    72,372.48x = 99,935.20 × 54,436.24
  4. Step 4: Simplify right side
    72,372.48x = 5,440,096,531.65
  5. Step 5: Solve for x
    x = 5,440,096,531.65/72,372.48
  6. Step 6: Final answer
    x = 75,168.03

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1.5x scale

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.