Home / 72,179.90-99,606.44-40,351.76

Finding the Fourth Proportional to 72,179.90, 99,606.44 and 40,351.76

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Solution

The fourth proportional to 72,179.90, 99,606.44 and 40,351.76 is: 55,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.90 : 99,606.44 = 40,351.76 : x
  2. Step 2: Convert to fraction form
    72,179.90/99,606.44 = 40,351.76/x
  3. Step 3: Cross multiply
    72,179.90x = 99,606.44 × 40,351.76
  4. Step 4: Simplify right side
    72,179.90x = 4,019,294,959.58
  5. Step 5: Solve for x
    x = 4,019,294,959.58/72,179.90
  6. Step 6: Final answer
    x = 55,684.41

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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.