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Finding the Fourth Proportional to 74,935.80, 112,073.22 and 66,673.80

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Solution

The fourth proportional to 74,935.80, 112,073.22 and 66,673.80 is: 99,716.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,935.80 : 112,073.22 = 66,673.80 : x
  2. Step 2: Convert to fraction form
    74,935.80/112,073.22 = 66,673.80/x
  3. Step 3: Cross multiply
    74,935.80x = 112,073.22 × 66,673.80
  4. Step 4: Simplify right side
    74,935.80x = 7,472,347,455.64
  5. Step 5: Solve for x
    x = 7,472,347,455.64/74,935.80
  6. Step 6: Final answer
    x = 99,716.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.