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Finding the Fourth Proportional to 72,772.52, 100,438.44 and 53,751.08

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Solution

The fourth proportional to 72,772.52, 100,438.44 and 53,751.08 is: 74,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772.52 : 100,438.44 = 53,751.08 : x
  2. Step 2: Convert to fraction form
    72,772.52/100,438.44 = 53,751.08/x
  3. Step 3: Cross multiply
    72,772.52x = 100,438.44 × 53,751.08
  4. Step 4: Simplify right side
    72,772.52x = 5,398,674,623.52
  5. Step 5: Solve for x
    x = 5,398,674,623.52/72,772.52
  6. Step 6: Final answer
    x = 74,185.62

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1.5x scale

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.