Home / 72,087.48-99,478.26-40,255.56

Finding the Fourth Proportional to 72,087.48, 99,478.26 and 40,255.56

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Solution

The fourth proportional to 72,087.48, 99,478.26 and 40,255.56 is: 55,551.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,087.48 : 99,478.26 = 40,255.56 : x
  2. Step 2: Convert to fraction form
    72,087.48/99,478.26 = 40,255.56/x
  3. Step 3: Cross multiply
    72,087.48x = 99,478.26 × 40,255.56
  4. Step 4: Simplify right side
    72,087.48x = 4,004,553,064.13
  5. Step 5: Solve for x
    x = 4,004,553,064.13/72,087.48
  6. Step 6: Final answer
    x = 55,551.30

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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.