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Finding the Fourth Proportional to 70,426.74, 105,640.35 and 17,836.20

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Solution

The fourth proportional to 70,426.74, 105,640.35 and 17,836.20 is: 26,754.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,426.74 : 105,640.35 = 17,836.20 : x
  2. Step 2: Convert to fraction form
    70,426.74/105,640.35 = 17,836.20/x
  3. Step 3: Cross multiply
    70,426.74x = 105,640.35 × 17,836.20
  4. Step 4: Simplify right side
    70,426.74x = 1,884,222,410.67
  5. Step 5: Solve for x
    x = 1,884,222,410.67/70,426.74
  6. Step 6: Final answer
    x = 26,754.36

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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.