Home / 72,028.96-99,405.46-39,769.80

Finding the Fourth Proportional to 72,028.96, 99,405.46 and 39,769.80

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Solution

The fourth proportional to 72,028.96, 99,405.46 and 39,769.80 is: 54,885.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,028.96 : 99,405.46 = 39,769.80 : x
  2. Step 2: Convert to fraction form
    72,028.96/99,405.46 = 39,769.80/x
  3. Step 3: Cross multiply
    72,028.96x = 99,405.46 × 39,769.80
  4. Step 4: Simplify right side
    72,028.96x = 3,953,335,263.11
  5. Step 5: Solve for x
    x = 3,953,335,263.11/72,028.96
  6. Step 6: Final answer
    x = 54,885.36

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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.