Home / 90,985.88-125,564.38-50,699.68

Finding the Fourth Proportional to 90,985.88, 125,564.38 and 50,699.68

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Solution

The fourth proportional to 90,985.88, 125,564.38 and 50,699.68 is: 69,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985.88 : 125,564.38 = 50,699.68 : x
  2. Step 2: Convert to fraction form
    90,985.88/125,564.38 = 50,699.68/x
  3. Step 3: Cross multiply
    90,985.88x = 125,564.38 × 50,699.68
  4. Step 4: Simplify right side
    90,985.88x = 6,366,073,444.74
  5. Step 5: Solve for x
    x = 6,366,073,444.74/90,985.88
  6. Step 6: Final answer
    x = 69,967.71

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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.