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Finding the Fourth Proportional to 78,809.44, 117,980.88 and 52,422.88

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Solution

The fourth proportional to 78,809.44, 117,980.88 and 52,422.88 is: 78,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,809.44 : 117,980.88 = 52,422.88 : x
  2. Step 2: Convert to fraction form
    78,809.44/117,980.88 = 52,422.88/x
  3. Step 3: Cross multiply
    78,809.44x = 117,980.88 × 52,422.88
  4. Step 4: Simplify right side
    78,809.44x = 6,184,897,514.53
  5. Step 5: Solve for x
    x = 6,184,897,514.53/78,809.44
  6. Step 6: Final answer
    x = 78,479.15

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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.