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Finding the Fourth Proportional to 65,606.59, 90,580.68 and 50,472.55

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Solution

The fourth proportional to 65,606.59, 90,580.68 and 50,472.55 is: 69,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,606.59 : 90,580.68 = 50,472.55 : x
  2. Step 2: Convert to fraction form
    65,606.59/90,580.68 = 50,472.55/x
  3. Step 3: Cross multiply
    65,606.59x = 90,580.68 × 50,472.55
  4. Step 4: Simplify right side
    65,606.59x = 4,571,838,013.56
  5. Step 5: Solve for x
    x = 4,571,838,013.56/65,606.59
  6. Step 6: Final answer
    x = 69,685.65

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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.