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Finding the Fourth Proportional to 64,997.52, 97,488.72 and 18,254.40

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Solution

The fourth proportional to 64,997.52, 97,488.72 and 18,254.40 is: 27,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,997.52 : 97,488.72 = 18,254.40 : x
  2. Step 2: Convert to fraction form
    64,997.52/97,488.72 = 18,254.40/x
  3. Step 3: Cross multiply
    64,997.52x = 97,488.72 × 18,254.40
  4. Step 4: Simplify right side
    64,997.52x = 1,779,598,090.37
  5. Step 5: Solve for x
    x = 1,779,598,090.37/64,997.52
  6. Step 6: Final answer
    x = 27,379.48

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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.