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Finding the Fourth Proportional to 65,867.48, 90,897.88 and 36,796.78

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Solution

The fourth proportional to 65,867.48, 90,897.88 and 36,796.78 is: 50,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,867.48 : 90,897.88 = 36,796.78 : x
  2. Step 2: Convert to fraction form
    65,867.48/90,897.88 = 36,796.78/x
  3. Step 3: Cross multiply
    65,867.48x = 90,897.88 × 36,796.78
  4. Step 4: Simplify right side
    65,867.48x = 3,344,748,838.34
  5. Step 5: Solve for x
    x = 3,344,748,838.34/65,867.48
  6. Step 6: Final answer
    x = 50,779.98

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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.