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Finding the Fourth Proportional to 78,557.80, 117,812.22 and 25,954.60

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Solution

The fourth proportional to 78,557.80, 117,812.22 and 25,954.60 is: 38,923.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,557.80 : 117,812.22 = 25,954.60 : x
  2. Step 2: Convert to fraction form
    78,557.80/117,812.22 = 25,954.60/x
  3. Step 3: Cross multiply
    78,557.80x = 117,812.22 × 25,954.60
  4. Step 4: Simplify right side
    78,557.80x = 3,057,769,045.21
  5. Step 5: Solve for x
    x = 3,057,769,045.21/78,557.80
  6. Step 6: Final answer
    x = 38,923.81

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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.