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Finding the Fourth Proportional to 65,241.88, 90,051.52 and 38,393.02

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Solution

The fourth proportional to 65,241.88, 90,051.52 and 38,393.02 is: 52,992.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,241.88 : 90,051.52 = 38,393.02 : x
  2. Step 2: Convert to fraction form
    65,241.88/90,051.52 = 38,393.02/x
  3. Step 3: Cross multiply
    65,241.88x = 90,051.52 × 38,393.02
  4. Step 4: Simplify right side
    65,241.88x = 3,457,349,808.39
  5. Step 5: Solve for x
    x = 3,457,349,808.39/65,241.88
  6. Step 6: Final answer
    x = 52,992.80

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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.