Home / 103,315.40-142,575.09-57,993.42

Finding the Fourth Proportional to 103,315.40, 142,575.09 and 57,993.42

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Solution

The fourth proportional to 103,315.40, 142,575.09 and 57,993.42 is: 80,030.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,315.40 : 142,575.09 = 57,993.42 : x
  2. Step 2: Convert to fraction form
    103,315.40/142,575.09 = 57,993.42/x
  3. Step 3: Cross multiply
    103,315.40x = 142,575.09 × 57,993.42
  4. Step 4: Simplify right side
    103,315.40x = 8,268,416,591.10
  5. Step 5: Solve for x
    x = 8,268,416,591.10/103,315.40
  6. Step 6: Final answer
    x = 80,030.82

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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.