Home / 72,426.38-108,639.66-19,836.32

Finding the Fourth Proportional to 72,426.38, 108,639.66 and 19,836.32

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Solution

The fourth proportional to 72,426.38, 108,639.66 and 19,836.32 is: 29,754.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,426.38 : 108,639.66 = 19,836.32 : x
  2. Step 2: Convert to fraction form
    72,426.38/108,639.66 = 19,836.32/x
  3. Step 3: Cross multiply
    72,426.38x = 108,639.66 × 19,836.32
  4. Step 4: Simplify right side
    72,426.38x = 2,155,011,060.45
  5. Step 5: Solve for x
    x = 2,155,011,060.45/72,426.38
  6. Step 6: Final answer
    x = 29,754.50

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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.