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Finding the Fourth Proportional to 86,532, 119,427.12 and 53,017.44

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Solution

The fourth proportional to 86,532, 119,427.12 and 53,017.44 is: 73,172.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,532 : 119,427.12 = 53,017.44 : x
  2. Step 2: Convert to fraction form
    86,532/119,427.12 = 53,017.44/x
  3. Step 3: Cross multiply
    86,532x = 119,427.12 × 53,017.44
  4. Step 4: Simplify right side
    86,532x = 6,331,720,168.97
  5. Step 5: Solve for x
    x = 6,331,720,168.97/86,532
  6. Step 6: Final answer
    x = 73,172.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.