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Finding the Fourth Proportional to 65,663.76, 90,536.92 and 45,537.96

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Solution

The fourth proportional to 65,663.76, 90,536.92 and 45,537.96 is: 62,787.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,663.76 : 90,536.92 = 45,537.96 : x
  2. Step 2: Convert to fraction form
    65,663.76/90,536.92 = 45,537.96/x
  3. Step 3: Cross multiply
    65,663.76x = 90,536.92 × 45,537.96
  4. Step 4: Simplify right side
    65,663.76x = 4,122,866,641.48
  5. Step 5: Solve for x
    x = 4,122,866,641.48/65,663.76
  6. Step 6: Final answer
    x = 62,787.55

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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.