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Finding the Fourth Proportional to 92,881.88, 128,175.87 and 50,440.72

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Solution

The fourth proportional to 92,881.88, 128,175.87 and 50,440.72 is: 69,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,881.88 : 128,175.87 = 50,440.72 : x
  2. Step 2: Convert to fraction form
    92,881.88/128,175.87 = 50,440.72/x
  3. Step 3: Cross multiply
    92,881.88x = 128,175.87 × 50,440.72
  4. Step 4: Simplify right side
    92,881.88x = 6,465,283,169.43
  5. Step 5: Solve for x
    x = 6,465,283,169.43/92,881.88
  6. Step 6: Final answer
    x = 69,607.58

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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.