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Finding the Fourth Proportional to 66,123.12, 91,248.12 and 35,907.06

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Solution

The fourth proportional to 66,123.12, 91,248.12 and 35,907.06 is: 49,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,123.12 : 91,248.12 = 35,907.06 : x
  2. Step 2: Convert to fraction form
    66,123.12/91,248.12 = 35,907.06/x
  3. Step 3: Cross multiply
    66,123.12x = 91,248.12 × 35,907.06
  4. Step 4: Simplify right side
    66,123.12x = 3,276,451,719.73
  5. Step 5: Solve for x
    x = 3,276,451,719.73/66,123.12
  6. Step 6: Final answer
    x = 49,550.77

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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.