Home / 78,771.48-118,117.80-26,162.52

Finding the Fourth Proportional to 78,771.48, 118,117.80 and 26,162.52

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Solution

The fourth proportional to 78,771.48, 118,117.80 and 26,162.52 is: 39,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,771.48 : 118,117.80 = 26,162.52 : x
  2. Step 2: Convert to fraction form
    78,771.48/118,117.80 = 26,162.52/x
  3. Step 3: Cross multiply
    78,771.48x = 118,117.80 × 26,162.52
  4. Step 4: Simplify right side
    78,771.48x = 3,090,259,304.86
  5. Step 5: Solve for x
    x = 3,090,259,304.86/78,771.48
  6. Step 6: Final answer
    x = 39,230.69

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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.