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Finding the Fourth Proportional to 86,484.28, 129,730.28 and 26,508.44

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Solution

The fourth proportional to 86,484.28, 129,730.28 and 26,508.44 is: 39,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,484.28 : 129,730.28 = 26,508.44 : x
  2. Step 2: Convert to fraction form
    86,484.28/129,730.28 = 26,508.44/x
  3. Step 3: Cross multiply
    86,484.28x = 129,730.28 × 26,508.44
  4. Step 4: Simplify right side
    86,484.28x = 3,438,947,343.56
  5. Step 5: Solve for x
    x = 3,438,947,343.56/86,484.28
  6. Step 6: Final answer
    x = 39,763.84

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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.