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Finding the Fourth Proportional to 72,507.08, 108,631.88 and 30,294.24

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Solution

The fourth proportional to 72,507.08, 108,631.88 and 30,294.24 is: 45,387.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,507.08 : 108,631.88 = 30,294.24 : x
  2. Step 2: Convert to fraction form
    72,507.08/108,631.88 = 30,294.24/x
  3. Step 3: Cross multiply
    72,507.08x = 108,631.88 × 30,294.24
  4. Step 4: Simplify right side
    72,507.08x = 3,290,919,969.54
  5. Step 5: Solve for x
    x = 3,290,919,969.54/72,507.08
  6. Step 6: Final answer
    x = 45,387.57

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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.