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Finding the Fourth Proportional to 65,493.29, 90,379.53 and 36,423.45

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Solution

The fourth proportional to 65,493.29, 90,379.53 and 36,423.45 is: 50,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,493.29 : 90,379.53 = 36,423.45 : x
  2. Step 2: Convert to fraction form
    65,493.29/90,379.53 = 36,423.45/x
  3. Step 3: Cross multiply
    65,493.29x = 90,379.53 × 36,423.45
  4. Step 4: Simplify right side
    65,493.29x = 3,291,934,291.98
  5. Step 5: Solve for x
    x = 3,291,934,291.98/65,493.29
  6. Step 6: Final answer
    x = 50,263.69

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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.