Home / 91,990.08-137,635.20-56,842.56

Finding the Fourth Proportional to 91,990.08, 137,635.20 and 56,842.56

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Solution

The fourth proportional to 91,990.08, 137,635.20 and 56,842.56 is: 85,047.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,990.08 : 137,635.20 = 56,842.56 : x
  2. Step 2: Convert to fraction form
    91,990.08/137,635.20 = 56,842.56/x
  3. Step 3: Cross multiply
    91,990.08x = 137,635.20 × 56,842.56
  4. Step 4: Simplify right side
    91,990.08x = 7,823,537,114.11
  5. Step 5: Solve for x
    x = 7,823,537,114.11/91,990.08
  6. Step 6: Final answer
    x = 85,047.62

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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.