Home / 78,727.60-118,092.30-19,563.40

Finding the Fourth Proportional to 78,727.60, 118,092.30 and 19,563.40

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Solution

The fourth proportional to 78,727.60, 118,092.30 and 19,563.40 is: 29,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727.60 : 118,092.30 = 19,563.40 : x
  2. Step 2: Convert to fraction form
    78,727.60/118,092.30 = 19,563.40/x
  3. Step 3: Cross multiply
    78,727.60x = 118,092.30 × 19,563.40
  4. Step 4: Simplify right side
    78,727.60x = 2,310,286,901.82
  5. Step 5: Solve for x
    x = 2,310,286,901.82/78,727.60
  6. Step 6: Final answer
    x = 29,345.32

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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.