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Finding the Fourth Proportional to 86,962.82, 130,442.81 and 34,372.76

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Solution

The fourth proportional to 86,962.82, 130,442.81 and 34,372.76 is: 51,558.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,962.82 : 130,442.81 = 34,372.76 : x
  2. Step 2: Convert to fraction form
    86,962.82/130,442.81 = 34,372.76/x
  3. Step 3: Cross multiply
    86,962.82x = 130,442.81 × 34,372.76
  4. Step 4: Simplify right side
    86,962.82x = 4,483,678,577.78
  5. Step 5: Solve for x
    x = 4,483,678,577.78/86,962.82
  6. Step 6: Final answer
    x = 51,558.57

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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.