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Finding the Fourth Proportional to 65,237.88, 90,045.99 and 38,389.02

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Solution

The fourth proportional to 65,237.88, 90,045.99 and 38,389.02 is: 52,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,237.88 : 90,045.99 = 38,389.02 : x
  2. Step 2: Convert to fraction form
    65,237.88/90,045.99 = 38,389.02/x
  3. Step 3: Cross multiply
    65,237.88x = 90,045.99 × 38,389.02
  4. Step 4: Simplify right side
    65,237.88x = 3,456,777,311.03
  5. Step 5: Solve for x
    x = 3,456,777,311.03/65,237.88
  6. Step 6: Final answer
    x = 52,987.27

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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.