Home / 86,721.20-130,104.18-26,748.32

Finding the Fourth Proportional to 86,721.20, 130,104.18 and 26,748.32

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Solution

The fourth proportional to 86,721.20, 130,104.18 and 26,748.32 is: 40,129.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,721.20 : 130,104.18 = 26,748.32 : x
  2. Step 2: Convert to fraction form
    86,721.20/130,104.18 = 26,748.32/x
  3. Step 3: Cross multiply
    86,721.20x = 130,104.18 × 26,748.32
  4. Step 4: Simplify right side
    86,721.20x = 3,480,068,077.35
  5. Step 5: Solve for x
    x = 3,480,068,077.35/86,721.20
  6. Step 6: Final answer
    x = 40,129.38

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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.