Home / 72,192.85-99,628.25-39,928.43

Finding the Fourth Proportional to 72,192.85, 99,628.25 and 39,928.43

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Solution

The fourth proportional to 72,192.85, 99,628.25 and 39,928.43 is: 55,102.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,192.85 : 99,628.25 = 39,928.43 : x
  2. Step 2: Convert to fraction form
    72,192.85/99,628.25 = 39,928.43/x
  3. Step 3: Cross multiply
    72,192.85x = 99,628.25 × 39,928.43
  4. Step 4: Simplify right side
    72,192.85x = 3,977,999,655.58
  5. Step 5: Solve for x
    x = 3,977,999,655.58/72,192.85
  6. Step 6: Final answer
    x = 55,102.41

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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.