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Finding the Fourth Proportional to 92,919.05, 128,282.74 and 67,400.91

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Solution

The fourth proportional to 92,919.05, 128,282.74 and 67,400.91 is: 93,052.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,919.05 : 128,282.74 = 67,400.91 : x
  2. Step 2: Convert to fraction form
    92,919.05/128,282.74 = 67,400.91/x
  3. Step 3: Cross multiply
    92,919.05x = 128,282.74 × 67,400.91
  4. Step 4: Simplify right side
    92,919.05x = 8,646,373,244.79
  5. Step 5: Solve for x
    x = 8,646,373,244.79/92,919.05
  6. Step 6: Final answer
    x = 93,052.75

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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.