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Finding the Fourth Proportional to 78,984.57, 118,482.98 and 26,394.24

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Solution

The fourth proportional to 78,984.57, 118,482.98 and 26,394.24 is: 39,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.57 : 118,482.98 = 26,394.24 : x
  2. Step 2: Convert to fraction form
    78,984.57/118,482.98 = 26,394.24/x
  3. Step 3: Cross multiply
    78,984.57x = 118,482.98 × 26,394.24
  4. Step 4: Simplify right side
    78,984.57x = 3,127,268,276.02
  5. Step 5: Solve for x
    x = 3,127,268,276.02/78,984.57
  6. Step 6: Final answer
    x = 39,593.41

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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.