Home / 90,619.61-125,011.67-63,777.01

Finding the Fourth Proportional to 90,619.61, 125,011.67 and 63,777.01

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Solution

The fourth proportional to 90,619.61, 125,011.67 and 63,777.01 is: 87,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,619.61 : 125,011.67 = 63,777.01 : x
  2. Step 2: Convert to fraction form
    90,619.61/125,011.67 = 63,777.01/x
  3. Step 3: Cross multiply
    90,619.61x = 125,011.67 × 63,777.01
  4. Step 4: Simplify right side
    90,619.61x = 7,972,870,208.82
  5. Step 5: Solve for x
    x = 7,972,870,208.82/90,619.61
  6. Step 6: Final answer
    x = 87,981.73

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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.