Home / 66,438.06-91,661.52-42,577.88

Finding the Fourth Proportional to 66,438.06, 91,661.52 and 42,577.88

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Solution

The fourth proportional to 66,438.06, 91,661.52 and 42,577.88 is: 58,742.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,438.06 : 91,661.52 = 42,577.88 : x
  2. Step 2: Convert to fraction form
    66,438.06/91,661.52 = 42,577.88/x
  3. Step 3: Cross multiply
    66,438.06x = 91,661.52 × 42,577.88
  4. Step 4: Simplify right side
    66,438.06x = 3,902,753,199.18
  5. Step 5: Solve for x
    x = 3,902,753,199.18/66,438.06
  6. Step 6: Final answer
    x = 58,742.73

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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.