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Finding the Fourth Proportional to 78,585.52, 117,878.84 and 22,425.52

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Solution

The fourth proportional to 78,585.52, 117,878.84 and 22,425.52 is: 33,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,585.52 : 117,878.84 = 22,425.52 : x
  2. Step 2: Convert to fraction form
    78,585.52/117,878.84 = 22,425.52/x
  3. Step 3: Cross multiply
    78,585.52x = 117,878.84 × 22,425.52
  4. Step 4: Simplify right side
    78,585.52x = 2,643,494,284.00
  5. Step 5: Solve for x
    x = 2,643,494,284.00/78,585.52
  6. Step 6: Final answer
    x = 33,638.44

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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.