Home / 87,999.18-121,429.86-54,009.08

Finding the Fourth Proportional to 87,999.18, 121,429.86 and 54,009.08

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Solution

The fourth proportional to 87,999.18, 121,429.86 and 54,009.08 is: 74,527.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,999.18 : 121,429.86 = 54,009.08 : x
  2. Step 2: Convert to fraction form
    87,999.18/121,429.86 = 54,009.08/x
  3. Step 3: Cross multiply
    87,999.18x = 121,429.86 × 54,009.08
  4. Step 4: Simplify right side
    87,999.18x = 6,558,315,023.13
  5. Step 5: Solve for x
    x = 6,558,315,023.13/87,999.18
  6. Step 6: Final answer
    x = 74,527.00

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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.