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Finding the Fourth Proportional to 72,526.80, 108,807.60 and 30,383.52

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Solution

The fourth proportional to 72,526.80, 108,807.60 and 30,383.52 is: 45,582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,526.80 : 108,807.60 = 30,383.52 : x
  2. Step 2: Convert to fraction form
    72,526.80/108,807.60 = 30,383.52/x
  3. Step 3: Cross multiply
    72,526.80x = 108,807.60 × 30,383.52
  4. Step 4: Simplify right side
    72,526.80x = 3,305,957,890.75
  5. Step 5: Solve for x
    x = 3,305,957,890.75/72,526.80
  6. Step 6: Final answer
    x = 45,582.57

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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.