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Finding the Fourth Proportional to 67,705.50, 101,558.25 and 18,457.50

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Solution

The fourth proportional to 67,705.50, 101,558.25 and 18,457.50 is: 27,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,705.50 : 101,558.25 = 18,457.50 : x
  2. Step 2: Convert to fraction form
    67,705.50/101,558.25 = 18,457.50/x
  3. Step 3: Cross multiply
    67,705.50x = 101,558.25 × 18,457.50
  4. Step 4: Simplify right side
    67,705.50x = 1,874,511,399.38
  5. Step 5: Solve for x
    x = 1,874,511,399.38/67,705.50
  6. Step 6: Final answer
    x = 27,686.25

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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.