Home / 77,920.68-116,815.36-31,148.04

Finding the Fourth Proportional to 77,920.68, 116,815.36 and 31,148.04

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Solution

The fourth proportional to 77,920.68, 116,815.36 and 31,148.04 is: 46,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,920.68 : 116,815.36 = 31,148.04 : x
  2. Step 2: Convert to fraction form
    77,920.68/116,815.36 = 31,148.04/x
  3. Step 3: Cross multiply
    77,920.68x = 116,815.36 × 31,148.04
  4. Step 4: Simplify right side
    77,920.68x = 3,638,569,505.89
  5. Step 5: Solve for x
    x = 3,638,569,505.89/77,920.68
  6. Step 6: Final answer
    x = 46,695.81

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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.