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Finding the Fourth Proportional to 72,913.68, 109,370.52 and 20,323.62

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Solution

The fourth proportional to 72,913.68, 109,370.52 and 20,323.62 is: 30,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,913.68 : 109,370.52 = 20,323.62 : x
  2. Step 2: Convert to fraction form
    72,913.68/109,370.52 = 20,323.62/x
  3. Step 3: Cross multiply
    72,913.68x = 109,370.52 × 20,323.62
  4. Step 4: Simplify right side
    72,913.68x = 2,222,804,887.68
  5. Step 5: Solve for x
    x = 2,222,804,887.68/72,913.68
  6. Step 6: Final answer
    x = 30,485.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.