Home / 77,877.20-116,827.32-31,129.04

Finding the Fourth Proportional to 77,877.20, 116,827.32 and 31,129.04

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Solution

The fourth proportional to 77,877.20, 116,827.32 and 31,129.04 is: 46,698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,877.20 : 116,827.32 = 31,129.04 : x
  2. Step 2: Convert to fraction form
    77,877.20/116,827.32 = 31,129.04/x
  3. Step 3: Cross multiply
    77,877.20x = 116,827.32 × 31,129.04
  4. Step 4: Simplify right side
    77,877.20x = 3,636,722,317.37
  5. Step 5: Solve for x
    x = 3,636,722,317.37/77,877.20
  6. Step 6: Final answer
    x = 46,698.16

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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.