Home / 72,150.94-99,564.96-40,319.56

Finding the Fourth Proportional to 72,150.94, 99,564.96 and 40,319.56

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Solution

The fourth proportional to 72,150.94, 99,564.96 and 40,319.56 is: 55,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,150.94 : 99,564.96 = 40,319.56 : x
  2. Step 2: Convert to fraction form
    72,150.94/99,564.96 = 40,319.56/x
  3. Step 3: Cross multiply
    72,150.94x = 99,564.96 × 40,319.56
  4. Step 4: Simplify right side
    72,150.94x = 4,014,415,378.62
  5. Step 5: Solve for x
    x = 4,014,415,378.62/72,150.94
  6. Step 6: Final answer
    x = 55,639.13

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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.