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Finding the Fourth Proportional to 72,271.92, 108,454.15 and 39,015.14

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Solution

The fourth proportional to 72,271.92, 108,454.15 and 39,015.14 is: 58,547.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,271.92 : 108,454.15 = 39,015.14 : x
  2. Step 2: Convert to fraction form
    72,271.92/108,454.15 = 39,015.14/x
  3. Step 3: Cross multiply
    72,271.92x = 108,454.15 × 39,015.14
  4. Step 4: Simplify right side
    72,271.92x = 4,231,353,612.73
  5. Step 5: Solve for x
    x = 4,231,353,612.73/72,271.92
  6. Step 6: Final answer
    x = 58,547.69

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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.