Home / 78,945.06-118,418.64-26,354.55

Finding the Fourth Proportional to 78,945.06, 118,418.64 and 26,354.55

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Solution

The fourth proportional to 78,945.06, 118,418.64 and 26,354.55 is: 39,532.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,945.06 : 118,418.64 = 26,354.55 : x
  2. Step 2: Convert to fraction form
    78,945.06/118,418.64 = 26,354.55/x
  3. Step 3: Cross multiply
    78,945.06x = 118,418.64 × 26,354.55
  4. Step 4: Simplify right side
    78,945.06x = 3,120,869,968.81
  5. Step 5: Solve for x
    x = 3,120,869,968.81/78,945.06
  6. Step 6: Final answer
    x = 39,532.18

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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.