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Finding the Fourth Proportional to 64,987.92, 97,490.52 and 18,241.20

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Solution

The fourth proportional to 64,987.92, 97,490.52 and 18,241.20 is: 27,364.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.92 : 97,490.52 = 18,241.20 : x
  2. Step 2: Convert to fraction form
    64,987.92/97,490.52 = 18,241.20/x
  3. Step 3: Cross multiply
    64,987.92x = 97,490.52 × 18,241.20
  4. Step 4: Simplify right side
    64,987.92x = 1,778,344,073.42
  5. Step 5: Solve for x
    x = 1,778,344,073.42/64,987.92
  6. Step 6: Final answer
    x = 27,364.23

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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.