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Finding the Fourth Proportional to 86,706.30, 130,071.83 and 26,739.82

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Solution

The fourth proportional to 86,706.30, 130,071.83 and 26,739.82 is: 40,113.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,706.30 : 130,071.83 = 26,739.82 : x
  2. Step 2: Convert to fraction form
    86,706.30/130,071.83 = 26,739.82/x
  3. Step 3: Cross multiply
    86,706.30x = 130,071.83 × 26,739.82
  4. Step 4: Simplify right side
    86,706.30x = 3,478,097,350.16
  5. Step 5: Solve for x
    x = 3,478,097,350.16/86,706.30
  6. Step 6: Final answer
    x = 40,113.55

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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.