Home / 78,930.40-118,403.52-22,771.90

Finding the Fourth Proportional to 78,930.40, 118,403.52 and 22,771.90

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Solution

The fourth proportional to 78,930.40, 118,403.52 and 22,771.90 is: 34,160.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,930.40 : 118,403.52 = 22,771.90 : x
  2. Step 2: Convert to fraction form
    78,930.40/118,403.52 = 22,771.90/x
  3. Step 3: Cross multiply
    78,930.40x = 118,403.52 × 22,771.90
  4. Step 4: Simplify right side
    78,930.40x = 2,696,273,117.09
  5. Step 5: Solve for x
    x = 2,696,273,117.09/78,930.40
  6. Step 6: Final answer
    x = 34,160.13

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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.