Home / 91,811.23-137,679.99-28,610.58

Finding the Fourth Proportional to 91,811.23, 137,679.99 and 28,610.58

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Solution

The fourth proportional to 91,811.23, 137,679.99 and 28,610.58 is: 42,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,811.23 : 137,679.99 = 28,610.58 : x
  2. Step 2: Convert to fraction form
    91,811.23/137,679.99 = 28,610.58/x
  3. Step 3: Cross multiply
    91,811.23x = 137,679.99 × 28,610.58
  4. Step 4: Simplify right side
    91,811.23x = 3,939,104,368.29
  5. Step 5: Solve for x
    x = 3,939,104,368.29/91,811.23
  6. Step 6: Final answer
    x = 42,904.39

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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.