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Finding the Fourth Proportional to 66,415.51, 91,653.41 and 36,607.51

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Solution

The fourth proportional to 66,415.51, 91,653.41 and 36,607.51 is: 50,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,415.51 : 91,653.41 = 36,607.51 : x
  2. Step 2: Convert to fraction form
    66,415.51/91,653.41 = 36,607.51/x
  3. Step 3: Cross multiply
    66,415.51x = 91,653.41 × 36,607.51
  4. Step 4: Simplify right side
    66,415.51x = 3,355,203,123.11
  5. Step 5: Solve for x
    x = 3,355,203,123.11/66,415.51
  6. Step 6: Final answer
    x = 50,518.37

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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.