Home / 78,259.08-117,374.99-36,135.57

Finding the Fourth Proportional to 78,259.08, 117,374.99 and 36,135.57

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Solution

The fourth proportional to 78,259.08, 117,374.99 and 36,135.57 is: 54,197.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,259.08 : 117,374.99 = 36,135.57 : x
  2. Step 2: Convert to fraction form
    78,259.08/117,374.99 = 36,135.57/x
  3. Step 3: Cross multiply
    78,259.08x = 117,374.99 × 36,135.57
  4. Step 4: Simplify right side
    78,259.08x = 4,241,411,986.72
  5. Step 5: Solve for x
    x = 4,241,411,986.72/78,259.08
  6. Step 6: Final answer
    x = 54,197.06

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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.