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Finding the Fourth Proportional to 72,352.32, 108,513.84 and 19,757.40

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Solution

The fourth proportional to 72,352.32, 108,513.84 and 19,757.40 is: 29,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,352.32 : 108,513.84 = 19,757.40 : x
  2. Step 2: Convert to fraction form
    72,352.32/108,513.84 = 19,757.40/x
  3. Step 3: Cross multiply
    72,352.32x = 108,513.84 × 19,757.40
  4. Step 4: Simplify right side
    72,352.32x = 2,143,951,342.42
  5. Step 5: Solve for x
    x = 2,143,951,342.42/72,352.32
  6. Step 6: Final answer
    x = 29,632.10

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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.