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Finding the Fourth Proportional to 76,365.60, 114,548.40 and 20,205.60

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Solution

The fourth proportional to 76,365.60, 114,548.40 and 20,205.60 is: 30,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,365.60 : 114,548.40 = 20,205.60 : x
  2. Step 2: Convert to fraction form
    76,365.60/114,548.40 = 20,205.60/x
  3. Step 3: Cross multiply
    76,365.60x = 114,548.40 × 20,205.60
  4. Step 4: Simplify right side
    76,365.60x = 2,314,519,151.04
  5. Step 5: Solve for x
    x = 2,314,519,151.04/76,365.60
  6. Step 6: Final answer
    x = 30,308.40

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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.