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Finding the Fourth Proportional to 86,697.66, 130,072.70 and 61,446.01

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Solution

The fourth proportional to 86,697.66, 130,072.70 and 61,446.01 is: 92,187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,697.66 : 130,072.70 = 61,446.01 : x
  2. Step 2: Convert to fraction form
    86,697.66/130,072.70 = 61,446.01/x
  3. Step 3: Cross multiply
    86,697.66x = 130,072.70 × 61,446.01
  4. Step 4: Simplify right side
    86,697.66x = 7,992,447,467.33
  5. Step 5: Solve for x
    x = 7,992,447,467.33/86,697.66
  6. Step 6: Final answer
    x = 92,187.59

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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.