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Finding the Fourth Proportional to 78,229.62, 117,292.58 and 28,303.22

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Solution

The fourth proportional to 78,229.62, 117,292.58 and 28,303.22 is: 42,436.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,229.62 : 117,292.58 = 28,303.22 : x
  2. Step 2: Convert to fraction form
    78,229.62/117,292.58 = 28,303.22/x
  3. Step 3: Cross multiply
    78,229.62x = 117,292.58 × 28,303.22
  4. Step 4: Simplify right side
    78,229.62x = 3,319,757,188.05
  5. Step 5: Solve for x
    x = 3,319,757,188.05/78,229.62
  6. Step 6: Final answer
    x = 42,436.07

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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.