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Finding the Fourth Proportional to 112,035.66, 154,602 and 66,717

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Solution

The fourth proportional to 112,035.66, 154,602 and 66,717 is: 92,065.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,035.66 : 154,602 = 66,717 : x
  2. Step 2: Convert to fraction form
    112,035.66/154,602 = 66,717/x
  3. Step 3: Cross multiply
    112,035.66x = 154,602 × 66,717
  4. Step 4: Simplify right side
    112,035.66x = 10,314,581,634
  5. Step 5: Solve for x
    x = 10,314,581,634/112,035.66
  6. Step 6: Final answer
    x = 92,065.17

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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.