Home / 90,440.80-124,677.20-63,501.28

Finding the Fourth Proportional to 90,440.80, 124,677.20 and 63,501.28

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Solution

The fourth proportional to 90,440.80, 124,677.20 and 63,501.28 is: 87,539.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,440.80 : 124,677.20 = 63,501.28 : x
  2. Step 2: Convert to fraction form
    90,440.80/124,677.20 = 63,501.28/x
  3. Step 3: Cross multiply
    90,440.80x = 124,677.20 × 63,501.28
  4. Step 4: Simplify right side
    90,440.80x = 7,917,161,786.82
  5. Step 5: Solve for x
    x = 7,917,161,786.82/90,440.80
  6. Step 6: Final answer
    x = 87,539.71

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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.