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Finding the Fourth Proportional to 65,580.50, 90,501.09 and 35,772.50

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Solution

The fourth proportional to 65,580.50, 90,501.09 and 35,772.50 is: 49,366.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,580.50 : 90,501.09 = 35,772.50 : x
  2. Step 2: Convert to fraction form
    65,580.50/90,501.09 = 35,772.50/x
  3. Step 3: Cross multiply
    65,580.50x = 90,501.09 × 35,772.50
  4. Step 4: Simplify right side
    65,580.50x = 3,237,450,242.03
  5. Step 5: Solve for x
    x = 3,237,450,242.03/65,580.50
  6. Step 6: Final answer
    x = 49,366.05

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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.