Home / 86,842.69-130,264.04-21,178.69

Finding the Fourth Proportional to 86,842.69, 130,264.04 and 21,178.69

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Solution

The fourth proportional to 86,842.69, 130,264.04 and 21,178.69 is: 31,768.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,842.69 : 130,264.04 = 21,178.69 : x
  2. Step 2: Convert to fraction form
    86,842.69/130,264.04 = 21,178.69/x
  3. Step 3: Cross multiply
    86,842.69x = 130,264.04 × 21,178.69
  4. Step 4: Simplify right side
    86,842.69x = 2,758,821,448.59
  5. Step 5: Solve for x
    x = 2,758,821,448.59/86,842.69
  6. Step 6: Final answer
    x = 31,768.03

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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.