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Finding the Fourth Proportional to 78,849.60, 118,293.30 and 26,259.54

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Solution

The fourth proportional to 78,849.60, 118,293.30 and 26,259.54 is: 39,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,849.60 : 118,293.30 = 26,259.54 : x
  2. Step 2: Convert to fraction form
    78,849.60/118,293.30 = 26,259.54/x
  3. Step 3: Cross multiply
    78,849.60x = 118,293.30 × 26,259.54
  4. Step 4: Simplify right side
    78,849.60x = 3,106,327,643.08
  5. Step 5: Solve for x
    x = 3,106,327,643.08/78,849.60
  6. Step 6: Final answer
    x = 39,395.60

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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.