Home / 81,045.34-121,566.40-36,641.03

Finding the Fourth Proportional to 81,045.34, 121,566.40 and 36,641.03

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Solution

The fourth proportional to 81,045.34, 121,566.40 and 36,641.03 is: 54,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,045.34 : 121,566.40 = 36,641.03 : x
  2. Step 2: Convert to fraction form
    81,045.34/121,566.40 = 36,641.03/x
  3. Step 3: Cross multiply
    81,045.34x = 121,566.40 × 36,641.03
  4. Step 4: Simplify right side
    81,045.34x = 4,454,317,409.96
  5. Step 5: Solve for x
    x = 4,454,317,409.96/81,045.34
  6. Step 6: Final answer
    x = 54,960.81

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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.