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Finding the Fourth Proportional to 66,965.34, 92,415.06 and 40,102.71

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Solution

The fourth proportional to 66,965.34, 92,415.06 and 40,102.71 is: 55,343.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,965.34 : 92,415.06 = 40,102.71 : x
  2. Step 2: Convert to fraction form
    66,965.34/92,415.06 = 40,102.71/x
  3. Step 3: Cross multiply
    66,965.34x = 92,415.06 × 40,102.71
  4. Step 4: Simplify right side
    66,965.34x = 3,706,094,350.81
  5. Step 5: Solve for x
    x = 3,706,094,350.81/66,965.34
  6. Step 6: Final answer
    x = 55,343.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.