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Finding the Fourth Proportional to 78,554.78, 117,814.36 and 22,393.64

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Solution

The fourth proportional to 78,554.78, 117,814.36 and 22,393.64 is: 33,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,554.78 : 117,814.36 = 22,393.64 : x
  2. Step 2: Convert to fraction form
    78,554.78/117,814.36 = 22,393.64/x
  3. Step 3: Cross multiply
    78,554.78x = 117,814.36 × 22,393.64
  4. Step 4: Simplify right side
    78,554.78x = 2,638,292,364.67
  5. Step 5: Solve for x
    x = 2,638,292,364.67/78,554.78
  6. Step 6: Final answer
    x = 33,585.38

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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.