Home / 87,931.36-121,353.96-50,211.28

Finding the Fourth Proportional to 87,931.36, 121,353.96 and 50,211.28

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Solution

The fourth proportional to 87,931.36, 121,353.96 and 50,211.28 is: 69,296.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,931.36 : 121,353.96 = 50,211.28 : x
  2. Step 2: Convert to fraction form
    87,931.36/121,353.96 = 50,211.28/x
  3. Step 3: Cross multiply
    87,931.36x = 121,353.96 × 50,211.28
  4. Step 4: Simplify right side
    87,931.36x = 6,093,337,664.67
  5. Step 5: Solve for x
    x = 6,093,337,664.67/87,931.36
  6. Step 6: Final answer
    x = 69,296.52

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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.