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Finding the Fourth Proportional to 69,403.60, 104,028.60 and 38,261.20

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Solution

The fourth proportional to 69,403.60, 104,028.60 and 38,261.20 is: 57,349.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,403.60 : 104,028.60 = 38,261.20 : x
  2. Step 2: Convert to fraction form
    69,403.60/104,028.60 = 38,261.20/x
  3. Step 3: Cross multiply
    69,403.60x = 104,028.60 × 38,261.20
  4. Step 4: Simplify right side
    69,403.60x = 3,980,259,070.32
  5. Step 5: Solve for x
    x = 3,980,259,070.32/69,403.60
  6. Step 6: Final answer
    x = 57,349.46

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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.