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Finding the Fourth Proportional to 72,547.34, 108,815.84 and 19,238.13

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Solution

The fourth proportional to 72,547.34, 108,815.84 and 19,238.13 is: 28,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.34 : 108,815.84 = 19,238.13 : x
  2. Step 2: Convert to fraction form
    72,547.34/108,815.84 = 19,238.13/x
  3. Step 3: Cross multiply
    72,547.34x = 108,815.84 × 19,238.13
  4. Step 4: Simplify right side
    72,547.34x = 2,093,413,324.07
  5. Step 5: Solve for x
    x = 2,093,413,324.07/72,547.34
  6. Step 6: Final answer
    x = 28,855.83

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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.