Home / 72,156.40-99,580.26-40,327.84

Finding the Fourth Proportional to 72,156.40, 99,580.26 and 40,327.84

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Solution

The fourth proportional to 72,156.40, 99,580.26 and 40,327.84 is: 55,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.40 : 99,580.26 = 40,327.84 : x
  2. Step 2: Convert to fraction form
    72,156.40/99,580.26 = 40,327.84/x
  3. Step 3: Cross multiply
    72,156.40x = 99,580.26 × 40,327.84
  4. Step 4: Simplify right side
    72,156.40x = 4,015,856,792.44
  5. Step 5: Solve for x
    x = 4,015,856,792.44/72,156.40
  6. Step 6: Final answer
    x = 55,654.89

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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.