Home / 82,534.78-123,802.20-45,074.36

Finding the Fourth Proportional to 82,534.78, 123,802.20 and 45,074.36

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Solution

The fourth proportional to 82,534.78, 123,802.20 and 45,074.36 is: 67,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,534.78 : 123,802.20 = 45,074.36 : x
  2. Step 2: Convert to fraction form
    82,534.78/123,802.20 = 45,074.36/x
  3. Step 3: Cross multiply
    82,534.78x = 123,802.20 × 45,074.36
  4. Step 4: Simplify right side
    82,534.78x = 5,580,304,931.59
  5. Step 5: Solve for x
    x = 5,580,304,931.59/82,534.78
  6. Step 6: Final answer
    x = 67,611.56

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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.