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Finding the Fourth Proportional to 72,369.63, 108,555.03 and 28,001.46

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Solution

The fourth proportional to 72,369.63, 108,555.03 and 28,001.46 is: 42,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,369.63 : 108,555.03 = 28,001.46 : x
  2. Step 2: Convert to fraction form
    72,369.63/108,555.03 = 28,001.46/x
  3. Step 3: Cross multiply
    72,369.63x = 108,555.03 × 28,001.46
  4. Step 4: Simplify right side
    72,369.63x = 3,039,699,330.34
  5. Step 5: Solve for x
    x = 3,039,699,330.34/72,369.63
  6. Step 6: Final answer
    x = 42,002.42

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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.