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Finding the Fourth Proportional to 92,969.35, 128,253.87 and 67,419.66

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Solution

The fourth proportional to 92,969.35, 128,253.87 and 67,419.66 is: 93,007.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,969.35 : 128,253.87 = 67,419.66 : x
  2. Step 2: Convert to fraction form
    92,969.35/128,253.87 = 67,419.66/x
  3. Step 3: Cross multiply
    92,969.35x = 128,253.87 × 67,419.66
  4. Step 4: Simplify right side
    92,969.35x = 8,646,832,309.08
  5. Step 5: Solve for x
    x = 8,646,832,309.08/92,969.35
  6. Step 6: Final answer
    x = 93,007.34

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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.