Home / 72,233.89-99,683.40-40,405.75

Finding the Fourth Proportional to 72,233.89, 99,683.40 and 40,405.75

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Solution

The fourth proportional to 72,233.89, 99,683.40 and 40,405.75 is: 55,760.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,233.89 : 99,683.40 = 40,405.75 : x
  2. Step 2: Convert to fraction form
    72,233.89/99,683.40 = 40,405.75/x
  3. Step 3: Cross multiply
    72,233.89x = 99,683.40 × 40,405.75
  4. Step 4: Simplify right side
    72,233.89x = 4,027,782,539.55
  5. Step 5: Solve for x
    x = 4,027,782,539.55/72,233.89
  6. Step 6: Final answer
    x = 55,760.29

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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.