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Finding the Fourth Proportional to 71,018.76, 106,532.16 and 18,426.84

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Solution

The fourth proportional to 71,018.76, 106,532.16 and 18,426.84 is: 27,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,018.76 : 106,532.16 = 18,426.84 : x
  2. Step 2: Convert to fraction form
    71,018.76/106,532.16 = 18,426.84/x
  3. Step 3: Cross multiply
    71,018.76x = 106,532.16 × 18,426.84
  4. Step 4: Simplify right side
    71,018.76x = 1,963,051,067.17
  5. Step 5: Solve for x
    x = 1,963,051,067.17/71,018.76
  6. Step 6: Final answer
    x = 27,641.30

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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.