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Finding the Fourth Proportional to 88,265, 121,808.40 and 50,023.60

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Solution

The fourth proportional to 88,265, 121,808.40 and 50,023.60 is: 69,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,265 : 121,808.40 = 50,023.60 : x
  2. Step 2: Convert to fraction form
    88,265/121,808.40 = 50,023.60/x
  3. Step 3: Cross multiply
    88,265x = 121,808.40 × 50,023.60
  4. Step 4: Simplify right side
    88,265x = 6,093,294,678.24
  5. Step 5: Solve for x
    x = 6,093,294,678.24/88,265
  6. Step 6: Final answer
    x = 69,034.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.