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Finding the Fourth Proportional to 65,438.66, 90,294.78 and 36,756.95

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Solution

The fourth proportional to 65,438.66, 90,294.78 and 36,756.95 is: 50,718.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,438.66 : 90,294.78 = 36,756.95 : x
  2. Step 2: Convert to fraction form
    65,438.66/90,294.78 = 36,756.95/x
  3. Step 3: Cross multiply
    65,438.66x = 90,294.78 × 36,756.95
  4. Step 4: Simplify right side
    65,438.66x = 3,318,960,713.72
  5. Step 5: Solve for x
    x = 3,318,960,713.72/65,438.66
  6. Step 6: Final answer
    x = 50,718.65

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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.