Home / 87,969.08-121,410.54-69,247.16

Finding the Fourth Proportional to 87,969.08, 121,410.54 and 69,247.16

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Solution

The fourth proportional to 87,969.08, 121,410.54 and 69,247.16 is: 95,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.08 : 121,410.54 = 69,247.16 : x
  2. Step 2: Convert to fraction form
    87,969.08/121,410.54 = 69,247.16/x
  3. Step 3: Cross multiply
    87,969.08x = 121,410.54 × 69,247.16
  4. Step 4: Simplify right side
    87,969.08x = 8,407,335,089.07
  5. Step 5: Solve for x
    x = 8,407,335,089.07/87,969.08
  6. Step 6: Final answer
    x = 95,571.48

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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.