Home / 72,091.55-99,431.05-43,381.28

Finding the Fourth Proportional to 72,091.55, 99,431.05 and 43,381.28

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Solution

The fourth proportional to 72,091.55, 99,431.05 and 43,381.28 is: 59,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,091.55 : 99,431.05 = 43,381.28 : x
  2. Step 2: Convert to fraction form
    72,091.55/99,431.05 = 43,381.28/x
  3. Step 3: Cross multiply
    72,091.55x = 99,431.05 × 43,381.28
  4. Step 4: Simplify right side
    72,091.55x = 4,313,446,220.74
  5. Step 5: Solve for x
    x = 4,313,446,220.74/72,091.55
  6. Step 6: Final answer
    x = 59,832.90

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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.