Home / 86,303.43-129,469.09-25,519.86

Finding the Fourth Proportional to 86,303.43, 129,469.09 and 25,519.86

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Solution

The fourth proportional to 86,303.43, 129,469.09 and 25,519.86 is: 38,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,303.43 : 129,469.09 = 25,519.86 : x
  2. Step 2: Convert to fraction form
    86,303.43/129,469.09 = 25,519.86/x
  3. Step 3: Cross multiply
    86,303.43x = 129,469.09 × 25,519.86
  4. Step 4: Simplify right side
    86,303.43x = 3,304,033,051.13
  5. Step 5: Solve for x
    x = 3,304,033,051.13/86,303.43
  6. Step 6: Final answer
    x = 38,283.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.