Home / 72,010.80-99,402.10-54,157.34

Finding the Fourth Proportional to 72,010.80, 99,402.10 and 54,157.34

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Solution

The fourth proportional to 72,010.80, 99,402.10 and 54,157.34 is: 74,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,010.80 : 99,402.10 = 54,157.34 : x
  2. Step 2: Convert to fraction form
    72,010.80/99,402.10 = 54,157.34/x
  3. Step 3: Cross multiply
    72,010.80x = 99,402.10 × 54,157.34
  4. Step 4: Simplify right side
    72,010.80x = 5,383,353,439.53
  5. Step 5: Solve for x
    x = 5,383,353,439.53/72,010.80
  6. Step 6: Final answer
    x = 74,757.58

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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.