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Finding the Fourth Proportional to 67,939.76, 101,925.74 and 66,810.12

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Solution

The fourth proportional to 67,939.76, 101,925.74 and 66,810.12 is: 100,231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,939.76 : 101,925.74 = 66,810.12 : x
  2. Step 2: Convert to fraction form
    67,939.76/101,925.74 = 66,810.12/x
  3. Step 3: Cross multiply
    67,939.76x = 101,925.74 × 66,810.12
  4. Step 4: Simplify right side
    67,939.76x = 6,809,670,705.29
  5. Step 5: Solve for x
    x = 6,809,670,705.29/67,939.76
  6. Step 6: Final answer
    x = 100,231.01

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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.