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Finding the Fourth Proportional to 78,327.39, 117,491.70 and 22,169.32

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Solution

The fourth proportional to 78,327.39, 117,491.70 and 22,169.32 is: 33,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,327.39 : 117,491.70 = 22,169.32 : x
  2. Step 2: Convert to fraction form
    78,327.39/117,491.70 = 22,169.32/x
  3. Step 3: Cross multiply
    78,327.39x = 117,491.70 × 22,169.32
  4. Step 4: Simplify right side
    78,327.39x = 2,604,711,094.64
  5. Step 5: Solve for x
    x = 2,604,711,094.64/78,327.39
  6. Step 6: Final answer
    x = 33,254.15

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1.5x scale

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.