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Finding the Fourth Proportional to 76,425.83, 114,643.80 and 20,265.15

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Solution

The fourth proportional to 76,425.83, 114,643.80 and 20,265.15 is: 30,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,425.83 : 114,643.80 = 20,265.15 : x
  2. Step 2: Convert to fraction form
    76,425.83/114,643.80 = 20,265.15/x
  3. Step 3: Cross multiply
    76,425.83x = 114,643.80 × 20,265.15
  4. Step 4: Simplify right side
    76,425.83x = 2,323,273,803.57
  5. Step 5: Solve for x
    x = 2,323,273,803.57/76,425.83
  6. Step 6: Final answer
    x = 30,399.07

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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.