Home / 87,661.09-120,992.42-53,688.29

Finding the Fourth Proportional to 87,661.09, 120,992.42 and 53,688.29

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Solution

The fourth proportional to 87,661.09, 120,992.42 and 53,688.29 is: 74,102.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,661.09 : 120,992.42 = 53,688.29 : x
  2. Step 2: Convert to fraction form
    87,661.09/120,992.42 = 53,688.29/x
  3. Step 3: Cross multiply
    87,661.09x = 120,992.42 × 53,688.29
  4. Step 4: Simplify right side
    87,661.09x = 6,495,876,607.39
  5. Step 5: Solve for x
    x = 6,495,876,607.39/87,661.09
  6. Step 6: Final answer
    x = 74,102.17

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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.