Home / 77,820.19-116,776.71-40,379.97

Finding the Fourth Proportional to 77,820.19, 116,776.71 and 40,379.97

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Solution

The fourth proportional to 77,820.19, 116,776.71 and 40,379.97 is: 60,594.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,820.19 : 116,776.71 = 40,379.97 : x
  2. Step 2: Convert to fraction form
    77,820.19/116,776.71 = 40,379.97/x
  3. Step 3: Cross multiply
    77,820.19x = 116,776.71 × 40,379.97
  4. Step 4: Simplify right side
    77,820.19x = 4,715,439,941.11
  5. Step 5: Solve for x
    x = 4,715,439,941.11/77,820.19
  6. Step 6: Final answer
    x = 60,594.04

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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.