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Finding the Fourth Proportional to 76,050.75, 114,076.13 and 20,646.75

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Solution

The fourth proportional to 76,050.75, 114,076.13 and 20,646.75 is: 30,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,050.75 : 114,076.13 = 20,646.75 : x
  2. Step 2: Convert to fraction form
    76,050.75/114,076.13 = 20,646.75/x
  3. Step 3: Cross multiply
    76,050.75x = 114,076.13 × 20,646.75
  4. Step 4: Simplify right side
    76,050.75x = 2,355,301,337.08
  5. Step 5: Solve for x
    x = 2,355,301,337.08/76,050.75
  6. Step 6: Final answer
    x = 30,970.13

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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.