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Finding the Fourth Proportional to 86,156.55, 129,240.99 and 22,976.34

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Solution

The fourth proportional to 86,156.55, 129,240.99 and 22,976.34 is: 34,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,156.55 : 129,240.99 = 22,976.34 : x
  2. Step 2: Convert to fraction form
    86,156.55/129,240.99 = 22,976.34/x
  3. Step 3: Cross multiply
    86,156.55x = 129,240.99 × 22,976.34
  4. Step 4: Simplify right side
    86,156.55x = 2,969,484,928.18
  5. Step 5: Solve for x
    x = 2,969,484,928.18/86,156.55
  6. Step 6: Final answer
    x = 34,466.15

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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.