Home / 78,688.48-118,044.60-26,086

Finding the Fourth Proportional to 78,688.48, 118,044.60 and 26,086

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Solution

The fourth proportional to 78,688.48, 118,044.60 and 26,086 is: 39,132.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,688.48 : 118,044.60 = 26,086 : x
  2. Step 2: Convert to fraction form
    78,688.48/118,044.60 = 26,086/x
  3. Step 3: Cross multiply
    78,688.48x = 118,044.60 × 26,086
  4. Step 4: Simplify right side
    78,688.48x = 3,079,311,435.60
  5. Step 5: Solve for x
    x = 3,079,311,435.60/78,688.48
  6. Step 6: Final answer
    x = 39,132.94

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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.