Home / 78,869.48-118,323.05-26,279.42

Finding the Fourth Proportional to 78,869.48, 118,323.05 and 26,279.42

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Solution

The fourth proportional to 78,869.48, 118,323.05 and 26,279.42 is: 39,425.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869.48 : 118,323.05 = 26,279.42 : x
  2. Step 2: Convert to fraction form
    78,869.48/118,323.05 = 26,279.42/x
  3. Step 3: Cross multiply
    78,869.48x = 118,323.05 × 26,279.42
  4. Step 4: Simplify right side
    78,869.48x = 3,109,460,403.62
  5. Step 5: Solve for x
    x = 3,109,460,403.62/78,869.48
  6. Step 6: Final answer
    x = 39,425.40

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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.