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Finding the Fourth Proportional to 66,477.75, 91,687.41 and 42,606.69

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Solution

The fourth proportional to 66,477.75, 91,687.41 and 42,606.69 is: 58,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477.75 : 91,687.41 = 42,606.69 : x
  2. Step 2: Convert to fraction form
    66,477.75/91,687.41 = 42,606.69/x
  3. Step 3: Cross multiply
    66,477.75x = 91,687.41 × 42,606.69
  4. Step 4: Simplify right side
    66,477.75x = 3,906,497,054.77
  5. Step 5: Solve for x
    x = 3,906,497,054.77/66,477.75
  6. Step 6: Final answer
    x = 58,763.98

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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.