Home / 103,618.64-155,435.13-40,417.75

Finding the Fourth Proportional to 103,618.64, 155,435.13 and 40,417.75

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Solution

The fourth proportional to 103,618.64, 155,435.13 and 40,417.75 is: 60,629.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.64 : 155,435.13 = 40,417.75 : x
  2. Step 2: Convert to fraction form
    103,618.64/155,435.13 = 40,417.75/x
  3. Step 3: Cross multiply
    103,618.64x = 155,435.13 × 40,417.75
  4. Step 4: Simplify right side
    103,618.64x = 6,282,338,225.56
  5. Step 5: Solve for x
    x = 6,282,338,225.56/103,618.64
  6. Step 6: Final answer
    x = 60,629.42

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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.