Home / 72,050.72-99,431.96-40,221.66

Finding the Fourth Proportional to 72,050.72, 99,431.96 and 40,221.66

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Solution

The fourth proportional to 72,050.72, 99,431.96 and 40,221.66 is: 55,506.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,050.72 : 99,431.96 = 40,221.66 : x
  2. Step 2: Convert to fraction form
    72,050.72/99,431.96 = 40,221.66/x
  3. Step 3: Cross multiply
    72,050.72x = 99,431.96 × 40,221.66
  4. Step 4: Simplify right side
    72,050.72x = 3,999,318,660.02
  5. Step 5: Solve for x
    x = 3,999,318,660.02/72,050.72
  6. Step 6: Final answer
    x = 55,506.99

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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.