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Finding the Fourth Proportional to 57,967.32, 86,943.72 and 18,521.16

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Solution

The fourth proportional to 57,967.32, 86,943.72 and 18,521.16 is: 27,779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,967.32 : 86,943.72 = 18,521.16 : x
  2. Step 2: Convert to fraction form
    57,967.32/86,943.72 = 18,521.16/x
  3. Step 3: Cross multiply
    57,967.32x = 86,943.72 × 18,521.16
  4. Step 4: Simplify right side
    57,967.32x = 1,610,298,549.12
  5. Step 5: Solve for x
    x = 1,610,298,549.12/57,967.32
  6. Step 6: Final answer
    x = 27,779.42

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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.