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Finding the Fourth Proportional to 78,060.33, 117,097.84 and 21,900.22

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Solution

The fourth proportional to 78,060.33, 117,097.84 and 21,900.22 is: 32,852.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,060.33 : 117,097.84 = 21,900.22 : x
  2. Step 2: Convert to fraction form
    78,060.33/117,097.84 = 21,900.22/x
  3. Step 3: Cross multiply
    78,060.33x = 117,097.84 × 21,900.22
  4. Step 4: Simplify right side
    78,060.33x = 2,564,468,110.03
  5. Step 5: Solve for x
    x = 2,564,468,110.03/78,060.33
  6. Step 6: Final answer
    x = 32,852.39

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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.