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Finding the Fourth Proportional to 86,626.84, 129,917.26 and 34,036.76

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Solution

The fourth proportional to 86,626.84, 129,917.26 and 34,036.76 is: 51,046.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,626.84 : 129,917.26 = 34,036.76 : x
  2. Step 2: Convert to fraction form
    86,626.84/129,917.26 = 34,036.76/x
  3. Step 3: Cross multiply
    86,626.84x = 129,917.26 × 34,036.76
  4. Step 4: Simplify right side
    86,626.84x = 4,421,962,598.48
  5. Step 5: Solve for x
    x = 4,421,962,598.48/86,626.84
  6. Step 6: Final answer
    x = 51,046.10

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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.